Mine Rescue Team Equipment, 51338-51347 [07-4318]

Agencies

• DEPARTMENT OF LABOR
• Mine Safety and Health Administration

[Federal Register Volume 72, Number 172 (Thursday, September 6, 2007)]
[Proposed Rules]
[Pages 51338-51347]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 07-4318]


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DEPARTMENT OF LABOR

Mine Safety and Health Administration

30 CFR Part 49

RIN 1219-AB56


Mine Rescue Team Equipment

AGENCY: Mine Safety and Health Administration (MSHA), Labor.

ACTION: Proposed rule; notice of public hearings; close of comment 
period.

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SUMMARY: This proposed rule would amend MSHA's existing standard 
addressing mine rescue team equipment at mine rescue stations serving 
underground coal and metal and nonmetal mines. MSHA proposes to amend 
the existing standard to reflect advances in mine rescue team equipment 
technology. The proposed amendments would increase safety and improve 
effectiveness of mine rescue teams.

DATES: All comments must be sent on or before November 9, 2007. MSHA 
will hold four public hearings on October 23, October 25, October 30, 
and November 1, 2007. Details about the public hearings are in the 
SUPPLEMENTARY INFORMATION section of this document.

ADDRESSES: Comments must be clearly identified with ``RIN 1219-AB56'' 
and may be sent to MSHA by any of the following methods:
    (1) Federal e-Rulemaking Portal: https://www.regulations.gov. Follow 
the instructions for submitting comments.
    (2) Electronic mail: zzMSHA-comments@dol.gov. Include ``RIN 1219-
AB56'' in the subject line of the message.
    (3) Facsimile: 202-693-9441. Include ``RIN 1219-AB56'' in the 
subject line of the message.
    (4) Regular Mail: MSHA, Office of Standards, Regulations, and 
Variances, 1100 Wilson Boulevard, Room 2350, Arlington, Virginia 22209-
3939.
    (5) Hand Delivery or Courier: MSHA, Office of Standards, 
Regulations, and Variances, 1100 Wilson Boulevard, Room 2350, 
Arlington, Virginia. Stop at the 21st floor to sign in at the 
receptionist's desk and wait for an escort.
    Information Collection Requirements: This proposed rule would not 
require any additional paperwork or information collection.
    Docket: Comments can be accessed electronically at https://
www.msha.gov under the Rules and Regs link. MSHA will post all comments 
on the Internet without change, including any personal information 
provided. Comments may also be reviewed at the Office of Standards, 
Regulations, and Variances, 1100 Wilson Boulevard, Room 2350, 
Arlington, Virginia. Stop at the 21st floor to sign in at the 
receptionist's desk and wait for an escort.
    Mailing List: MSHA maintains a list that enables subscribers to 
receive e-mail notification when rulemaking documents are published in 
the Federal Register. To subscribe, go to https://www.msha.gov under the 
Mailing List link.

FOR FURTHER INFORMATION CONTACT: Patricia W. Silvey, Director, Office 
of Standards, Regulations, and Variances, MSHA, at 
silvey.patricia@dol.gov (internet e-mail), 202-693-9440 (voice), or 
202-693-9441 (facsimile).

SUPPLEMENTARY INFORMATION: 

I. Introduction

    The existing standards for mine rescue teams contained in 30 CFR 
part 49 apply to all underground mines. Part 49 contains requirements 
addressing three essential elements of effective mine rescue teams: (1) 
Ready availability; (2) proper equipment at mine rescue stations; and 
(3) basic levels of skills and training. This proposed rule would 
revise and update MSHA's existing standard in 30 CFR part 49 for mine 
rescue team equipment. It is critical that mine rescue team members be 
provided with the latest in protective equipment so they can safely and 
effectively carry out their mission.

Public Hearings

    MSHA will hold four public hearings concerning the proposed rule. 
The hearings will begin at 2 p.m. and will be held as follows:

----------------------------------------------------------------------------------------------------------------
                Date                                      Location                              Contact
----------------------------------------------------------------------------------------------------------------
October 23, 2007, 2 p.m. to 6 p.m...  Little America Hotel, 500 South Main Street,     801-596-5700
                                       Salt Lake City, UT 84101.
October 25, 2007, 2 p.m. to 6 p.m...  Four Points by Sheraton Lexington, 1938 Stanton  859-259-1311
                                       Way, Lexington, KY 40511.
October 30, 2007, 2 p.m. to 6 p.m...  Charleston Civic Center, West Virginia Room      304-345-1500
                                       105, 200 Civic Center Drive, Charleston, WV
                                       25301.
November 1, 2007, 2 p.m. to 6 p.m...  Sheraton Birmingham Hotel, 2101 Richard          205-324-5000
                                       Arrington Boulevard, North, Birmingham, AL
                                       35203.
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[[Page 51339]]

    MSHA has scheduled these hearings so that interested parties can 
also attend the public hearings on the Agency's mine rescue team 
proposed rule for underground coal mines, which will be held in the 
morning on the same dates and in the same locations.
    The hearings will begin with an opening statement from MSHA, 
followed by an opportunity for members of the public to make oral 
presentations to the hearing panel. Requests to speak at a hearing 
should be made at least 5 days prior to the hearing date. Requests to 
speak may be made by telephone (202-693-9440), facsimile (202-693-
9441), or mail (MSHA, Office of Standards, Regulations, and Variances, 
1100 Wilson Boulevard, Room 2350, Arlington, Virginia 22209-3939). Any 
unallocated time at the end of each hearing will be made available to 
persons making same-day requests to speak.
    The presiding official may limit presentations and exclude 
irrelevant or unduly repetitious material and questions to ensure the 
orderly progress of the hearings. The hearing panelists may ask 
questions of speakers. Speakers and other attendees may present written 
information to the MSHA panel for inclusion in the rulemaking record. 
MSHA will accept post-hearing written comments and data for the record 
from any interested party, including those not presenting oral 
statements, until the close of the comment period on November 9, 2007.
    The hearings will be conducted in an informal manner. Formal rules 
of evidence and cross examination will not apply. MSHA will make 
transcripts of the hearings, post them on MSHA's Web site at https://
www.msha.gov, and include them in the rulemaking record.

II. Statutory and Rulemaking Background

    Historically, most coal and metal and nonmetal (M/NM) mine 
disasters have occurred as the result of underground fires or 
explosions. Mine rescue teams often place themselves in danger to save 
miners injured or trapped underground as the result of these events. As 
teams explore the affected mine, they may encounter fires, ground 
falls, explosions, and inadequate or no ventilation. During rescue and 
recovery activities, team members may have to re-establish ventilation 
controls, install or repair ground support, or extinguish fires to 
rescue trapped or injured miners. Mine rescue team members must be well 
trained and provided with technologically up-to-date equipment so they 
can safely and effectively perform mine rescue and recovery activities.
    In accordance with section 115(e) of the Federal Mine Safety and 
Health Act of 1977 (Mine Act), MSHA issued standards in 30 CFR part 49 
for mine rescue teams at underground coal and M/NM mines (45 FR 47002; 
July 11, 1980). This proposed rule would update the mine rescue team 
equipment standard for M/NM and coal mine rescue teams. These proposed 
changes would increase safety and improve the effectiveness of mine 
rescue teams in responding to mine emergencies.

III. Background

    Past disasters in underground M/NM and coal mines have occurred 
primarily due to fires or explosions, which caused mine rescue teams or 
trapped miners to encounter high concentrations of toxic gases or 
oxygen-deficient atmospheres, among other hazards. Typically, these 
emergencies cause methane and carbon monoxide concentrations to become 
elevated and oxygen levels to be depleted.

A. Hazardous Gaseous Conditions in Underground Mines

1. Methane
    Methane is a colorless and odorless gas. Methane mixtures measuring 
between 5 percent and 15 percent in air are explosive. A flammable 
mixture of methane and air can be ignited by electric arcs and sparks, 
open flames, or friction between the cutting bits of mining equipment 
and rock. Methane gas can produce suffocation by reducing the 
concentration of oxygen in the atmosphere. Methane gas can be found in 
certain M/NM mines that extract and process trona, salt, or petroleum, 
and in underground coal mines.
    Underground M/NM mines classified in accordance with Sec.  57.22003 
as I-A, II-A, III, and V-A are capable of producing methane gas in 
explosive concentrations and are commonly referred to as ``gassy'' 
mines. Underground M/NM mines classified under Sec.  57.22003 as I-B, 
I-C, II-B, IV, V-B, and VI are commonly referred to as ``non-gassy'' 
mines.
    Currently, eight underground M/NM mines, classified under Sec.  
57.22003 as II-A, III, and V-A, are ``gassy'' mines. There are no 
active underground M/NM mines currently classified as I-A. Existing 
regulations in 30 CFR part 57 subpart T for these four categories of M/
NM ``gassy'' mines require underground equipment to be approved, 
examinations for methane to be conducted at specified intervals, and 
the use of MSHA-approved monitoring or remote sensing devices.
    Generally, underground coal mines produce high concentrations of 
methane. Existing regulations in 30 CFR part 75 for underground coal 
mines require underground equipment to be approved, examinations for 
methane to be conducted at specified intervals, and the use of MSHA-
approved monitoring or remote sensing devices.
2. Carbon Monoxide
    Carbon monoxide is a toxic, colorless, and odorless gas. Fires and 
explosions typically produce high concentrations of carbon monoxide. 
Exposure to moderate concentrations of carbon monoxide can result in 
angina, impaired vision, reduced brain function, disorientation, severe 
headaches, dizziness, or faintness. Exposure to high concentrations of 
carbon monoxide can be fatal. Effects of carbon monoxide exposure vary 
greatly from person to person depending on age and overall health, as 
well as the gas concentration and length of exposure. Existing M/NM and 
coal standards require that personal exposures to carbon monoxide not 
exceed a time-weighted average of 50 parts per million (ppm) over an 8-
hour workday.
3. Oxygen Deficiency
    Oxygen deficient atmospheres can be fatal, depending on the 
concentration. Oxygen depletion requires two factors to produce a 
hazardous condition--oxidation to consume oxygen from the surrounding 
air, such as occurs during a fire or explosion, and an inadequate 
supply of incoming fresh air to replace oxygen that has been consumed. 
Oxygen deficiency can also occur when it is displaced by another gas, 
such as methane. Noticeable symptoms, such as faster and deeper 
breathing, dizziness, rapid heart beat, and headache occur when air 
contains about 15 percent oxygen or less. Unconsciousness and death may 
occur when less than 11 percent oxygen is present. Existing MSHA 
standards require that at least 19.5 percent oxygen by volume be 
maintained in all underground work and travel areas.

B. Single and Multi-Gas Detectors

    Some single and multi-gas detectors currently in mine rescue 
stations serving underground coal and M/NM mines cannot measure methane 
concentrations above 5 percent of volume, its lower explosive limit 
(LEL), or fail when exposed to methane concentrations exceeding the 
LEL. Other detectors cannot measure high concentrations of carbon 
monoxide. A gas detector that does not or cannot function in the high 
toxic gas

[[Page 51340]]

concentrations that are typically found in underground M/NM or coal 
mines after an explosion or fire would leave a mine rescue team without 
a means to measure gas concentrations and make informed decisions while 
working in a hazardous environment.
    Recent accidents in underground coal mines highlight the need for 
mine rescue teams to be equipped with gas detectors capable of 
measuring elevated concentrations of hazardous gases, particularly 
methane and carbon monoxide, during rescue and recovery activities. For 
example, elevated concentrations of methane, which exceeded the LEL of 
methane, were found after explosions at the Willow Creek mine in June 
2000 and the Jim Walters No. 5 mine in September 2001. Fifteen miners 
died as the result of those accidents. In addition, high concentrations 
of carbon monoxide exceeding the measurement capability of ``low 
range'' detectors were found during initial exploration activities by 
mine rescue teams at the Aracoma Alma No. 1 fire in January 2006, which 
resulted in the death of two miners. These high concentrations of 
carbon monoxide are also likely during and following uncontrolled fires 
at M/NM mines.
    Multi-gas detectors are instruments that contain from two to four 
sensor heads. Depending on the type and model selected, different 
sensors can be chosen to measure specific gases and concentration 
ranges, based on specific mining conditions. Single-gas and multi-gas 
detectors are readily available to measure methane concentrations to 
100 percent of volume, oxygen to at least 20 percent of volume, and 
carbon monoxide to at least 10,000 ppm.
    MSHA approves gas detectors as intrinsically safe for use in 
underground coal and ``gassy'' M/NM mines. MSHA-approved, handheld, 
single and multi-gas detectors are currently available from a variety 
of manufacturers.

IV. Section-by-Section Analysis

    MSHA's existing standards require mine rescue stations for 
underground mines to stock enough equipment for two mine rescue teams 
and supplies to maintain this equipment. This mine rescue team 
equipment proposed rule would--
     Upgrade requirements for self-contained breathing 
apparatus (SCBA) at coal and M/NM mine rescue stations;
     Increase the required number of oxygen bottles;
     Increase the amount of liquid air, liquid oxygen, 
pressurized oxygen, or oxygen generating chemicals, and carbon dioxide 
absorbent chemicals to maintain SCBAs for a longer period of time;
     Require mine rescue stations to be equipped with four gas 
detectors appropriate for each gas which may be encountered at the 
mines served and measure specified gases at specified concentrations;
     Delete requirements for certain equipment due to advances 
in gas detector technology;
     Make non-substantive amendments to clarify existing 
standards; and
     Make organizational changes to provide separate standards 
for M/NM mines and coal mines.
    MSHA requests comment on whether an oxygen resuscitator should be 
provided at the mine rescue station for use by the mine rescue team. In 
the past, mine rescue teams have relied on SCSRs or SCBAs to revive or 
help survivors breathe during rescue operations following mine fires or 
explosions. Use of SCSRs as resuscitators requires the patient to 
breathe into the SCSR. This process has been shown to be inefficient 
and may require multiple SCSRs. The other alternative currently 
available to mine rescue teams is to use a spare mine rescue SCBA, 
which weighs over 30 pounds. Lightweight oxygen resuscitators, weighing 
about 6 pounds with the oxygen bottle, are now available through at 
least one manufacturer.
    MSHA requests comment on all of the equipment changes in this 
proposed rule.

A. Section 49.6 Equipment and Maintenance Requirements for Metal and 
Nonmetal Mine Rescue Stations

1. Section 49.6(a)(1)
    MSHA is proposing to amend existing Sec.  49.6(a)(1) to require 
mine rescue stations to be equipped with 4-hour self-contained 
breathing apparatus (SCBA), rather than 2-hour SCBAs. MSHA would also 
change the phrase ``self-contained oxygen breathing apparatus'' to 
``self-contained breathing apparatus,'' so the revised language would 
be consistent with terminology currently used in the mining industry.
    Existing Sec.  49.6(a)(1) requires that mine rescue stations be 
provided with 12 self-contained oxygen breathing apparatus (SCBA), each 
with a minimum 2-hour capacity, and associated testing equipment. The 
existing standard also requires that the apparatus be approved by MSHA 
and the National Institute for Occupational Safety and Health (NIOSH) 
under 42 CFR part 84 subpart H. Approved 1- and 2-hour SCBAs were used 
for mine rescue activities in 1980 when MSHA promulgated the mine 
rescue standards in 30 CFR part 49.
    MSHA recently conducted a survey of SCBAs located at M/NM mine 
rescue stations. The Agency determined that all stations are already 
equipped with MSHA and NIOSH approved 4-hour SCBAs. There are currently 
no 2-hour SCBAs manufactured for mine rescue applications, which use 
oxygen, and which are approved by MSHA and NIOSH under 42 CFR part 84 
subpart H. MSHA concludes, therefore, that there would be no cost 
associated with this provision.
    This revision updates the rule to reflect current industry 
practice. Mine rescue teams equipped with 4-hour SCBAs can spend double 
the amount of time underground engaged in rescue and recovery 
activities. The higher capacity SCBAs raise team effectiveness and 
assist in locating injured or trapped miners more quickly, detecting 
and extinguishing mine or equipment fires, finding and repairing 
ventilation impairments or stoppages, and determining the location and 
extent of hazardous mine damage, such as roof falls. The 4-hour SCBAs 
allow fewer team rotations so team members get more rest before they 
have to reenter a mine to continue rescue or recovery activities.
2. Section 49.6(a)(2)
    MSHA is proposing to amend existing Sec.  49.6(a)(2) to require 
that supplies of liquid air, liquid oxygen, pressurized oxygen, or 
oxygen generating chemicals, and carbon dioxide absorbent chemicals be 
maintained at M/NM mine rescue stations sufficient to sustain each team 
for 8 hours during rescue operations. Existing Sec.  49.6(a)(2) 
requires mine rescue stations to be provided with sufficient supplies 
to sustain each team for 6 hours during rescue operations.
    MSHA believes that these supplies should be increased from 6 hours 
to 8 hours. The 2-hour increase in supplies would assure that mine 
rescue stations would be equipped with sufficient reserves of critical 
SCBA components for two complete replenishments of discharged SCBAs. An 
additional 2-hour supply would increase the safety and effectiveness of 
the mine rescue team and would be consistent with the requirement for 
4-hour SCBAs.
    Because the industry practice is to stock these supplies in bulk, 
MSHA estimates that there are no costs associated with this 
requirement. MSHA requests comment on this estimate.
3. Section 49.6(a)(3)
    MSHA is proposing to amend existing Sec.  49.6(a)(3) to require M/
NM mine

[[Page 51341]]

rescue stations to be equipped with two extra, fully-charged oxygen 
bottles for every six SCBA at the station. The existing standard 
requires one extra, fully-charged oxygen bottle for every six SCBAs.
    MSHA believes that two extra oxygen bottles for every six SCBAs 
would assure an adequate reserve of a critical component for mine 
rescue teams during time-sensitive rescue or recovery operations. An 
additional reserve supply of oxygen would also enhance the team's 
safety during an emergency.
4. Section 49.6(a)(4) and (a)(5)
    The proposed rule would make no changes to existing Sec.  
49.6(a)(4) and (a)(5) for M/NM mines.
5. Section 49.6(a)(6)
    MSHA is proposing to amend existing Sec.  49.6(a)(6) to require 
mine rescue stations serving underground M/NM mines to have four gas 
detectors appropriate for each gas which may be encountered at the 
mines served. For methane, carbon monoxide, and oxygen deficiency, the 
proposal would require that the gas detectors must be able to measure 
methane concentrations from 0 percent to 100 percent of volume, oxygen 
from 0 percent to at least 20 percent of volume, and carbon monoxide 
from 0 ppm to at least 10,000 ppm.
    Existing Sec.  49.6(a)(6) requires mine rescue stations to be 
provided with two gas detectors appropriate for each gas which may be 
encountered at the mines served. The existing rule does not specify the 
type of detector or gases to be detected, leaving this decision to the 
discretion of mine operators, based on specific conditions that might 
be encountered in an emergency. The existing rule also does not require 
selected detectors to measure a specific concentration of any gas. On 
more than one occasion, not having the equipment to measure high 
concentrations of one or more critical gases has hindered the 
collection of vital information. Mine rescue team members have had to 
delay entering the mine until equipment was located to measure the 
gases' concentrations and the team was able to evaluate the danger.
    It has been MSHA's experience that the number of gas detectors used 
in an underground emergency can vary depending on the needs of the 
individual mine rescue teams and conditions present at the mine. Mine 
rescue stations are typically equipped with two gas detectors for each 
gas that may be encountered at the mines served. Team safety and 
effectiveness would be better assured, however, if mine rescue stations 
were equipped with four gas detectors, two per mine rescue team, for 
each gas that may be encountered at the mines served so each team would 
be equipped with a backup device. Re-charging gas detectors and 
checking their calibration between rotations can delay rescue or 
recovery activities.
    Mine rescue teams serving M/NM mines generally would need gas 
detectors capable of measuring oxygen and carbon monoxide. A handheld, 
multi-gas detector would enable mine rescue teams to accurately and 
simultaneously measure the concentrations of relevant mine gases, such 
as carbon monoxide, methane, and oxygen, which would increase trapped 
miners'' chance of survival in time-sensitive emergency situations. 
Real-time information regarding hazardous gas concentrations allows 
affected team members to make better informed and more timely decisions 
regarding when to don protective equipment, and enter or exit a mine.
6. Section 49.6(a)(7)
    Existing section 49.6(a)(7) requires M/NM mine rescue stations to 
be provided with two oxygen indicators or flame safety lamps. In 
September 1998, MSHA deleted its approval regulations for flame safety 
lamps. MSHA had not received a new approval application for a flame 
safety lamp for 40 years prior to that time. Advances in technology 
have resulted in oxygen and methane detectors that are more accurate 
and reliable than flame safety lamps or oxygen indicators. As a result, 
methane and oxygen gas detectors have replaced flame safety lamps and 
oxygen indicators as the preferred instruments for detecting these 
gases in mines. Further, gas detectors can measure over a wider 
concentration range and more accurately than flame safety lamps and 
oxygen indicators. This proposal would remove and reserve existing 
Sec.  49.6(a)(7) because the equipment required by this provision has 
been replaced by technologically advanced devices.
    While flame safety lamps or other suitable devices can be used to 
satisfy the requirements of Sec.  57.8527 in all underground M/NM 
mines, existing Sec.  57.22227 does not permit flame safety lamps to be 
used as the primary device to test for methane in gassy M/NM mines.
7. Section 49.6(a)(8)
    MSHA is proposing organizational changes to existing Sec.  
49.6(a)(8), which requires that mine rescue team equipment include a 
communication system. The proposed rule would re-number the existing 
provisions, but would make no changes to the substantive requirements.
8. Section 49.6(a)(9)
    The proposed rule would make no changes to existing Sec.  
49.6(a)(9) for M/NM mines.
9. Section 49.6(b)
    MSHA is proposing organizational changes to existing Sec.  49.6(b), 
which requires that mine rescue team equipment be maintained in a 
manner that will ensure readiness for immediate use. The proposed rule 
would re-number the existing provisions, but would make no changes to 
the substantive requirements.

B. Section 49.16 Equipment and Maintenance Requirements for Coal Mine 
Rescue Stations

    MSHA is proposing to add Sec.  49.16 for underground coal mine 
rescue team equipment and maintenance requirements. The provisions are 
based on existing Sec.  49.6.
1. Section 49.16(a)
    Proposed Sec.  49.16(a), which is derived from existing Sec.  
49.6(a), would require each mine rescue station to be provided with 
certain equipment. It would also allow mine rescue stations serving 
certain underground anthracite coal mines to have the type and amount 
of equipment that would be appropriate for the number of their mine 
rescue team members. This option allows mine rescue stations associated 
with mine rescue teams having a reduced number of members to maintain 
fewer SCBAs, cap lamps, and chargers than required under Sec. Sec.  
49.16(a)(1) and (a)(5) for other coal mine rescue stations.
    As a result of petitions for modification granted under section 
101(c) of the Mine Act, mine rescue teams for underground anthracite 
coal mines, having no electrical equipment at the face or working 
section, are composed of three members with one alternate to serve both 
teams. Given these smaller teams, anthracite operators submitted 
petitions for modification requesting that their mine rescue stations 
be allowed to maintain eight SCBAs, eight cap lamps, and a charging 
station, rather than 12 of each as required by existing Sec. Sec.  
49.6(a)(1) and (a)(5). Because of the existing petitions for 
modification, MSHA concludes that there would be no cost savings 
associated with this provision.
    MSHA investigated each petition and made the following finding:

    MSHA's investigation found that reducing the quantity of 
equipment required to be

[[Page 51342]]

purchased and maintained at the anthracite mine rescue station to a 
quantity consistent with the requirements of granted modifications 
currently in effect, which allow anthracite mines to be covered by 
two mine rescue teams of three members each and an alternate, will 
provide the same measure of protection to the miners.

    On the basis of those investigations, MSHA granted these petitions 
for modification of Sec. Sec.  49.6(a)(1) and (a)(5). Currently, 11 
underground anthracite coal mines operate under this approved 
alternative method. The reduced number of SCBAs and cap lamps would 
provide sufficient equipment for teams serving these anthracite coal 
mines.
2. Section 49.16(a)(1)
    Proposed Sec.  49.16(a)(1), which is derived from existing Sec.  
49.6(a)(1), would require that mine rescue stations serving underground 
coal mines be equipped with 12 SCBAs, each with a minimum 4-hour 
capacity, and associated testing equipment. The proposed standard would 
require that the apparatus be approved by MSHA and NIOSH under 42 CFR 
part 84 subpart H. MSHA would also change the phrase ``self-contained 
oxygen breathing apparatus'' to ``self-contained breathing apparatus,'' 
so the revised language would be consistent with terminology currently 
used in the mining industry.
    MSHA recently conducted a survey of SCBAs at coal mine rescue 
stations. The Agency determined that all rescue stations are already 
equipped with MSHA and NIOSH approved 4-hour SCBAs. There are currently 
no 2-hour SCBAs manufactured for mine rescue applications, which use 
oxygen, and which are approved by MSHA and NIOSH under 42 CFR part 84 
subpart H. MSHA concludes, therefore, that there would be no cost 
associated with this provision.
    This revision updates the rule to reflect current industry 
practice. Mine rescue teams equipped with 4-hour SCBAs can spend double 
the amount of time underground engaged in rescue and recovery 
activities. The higher capacity SCBAs raise team effectiveness and 
assist in locating injured or trapped miners more quickly, detecting 
and extinguishing mine or equipment fires, finding and repairing 
ventilation impairments or stoppages, and determining the location and 
extent of hazardous mine damage, such as roof falls or collapsed seals. 
The 4-hour SCBAs allow fewer team rotations so team members get more 
rest before they have to reenter a mine to continue rescue or recovery 
activities.
3. Section 49.16(a)(2)
    Proposed Sec.  49.16(a)(2), which is derived from existing Sec.  
49.6(a)(2), would require coal mine rescue stations to maintain 
supplies of liquid air, liquid oxygen, pressurized oxygen, or oxygen 
generating chemicals, and carbon dioxide absorbent chemicals at coal 
mine rescue stations sufficient to sustain each team for 8-hours during 
rescue operations. Existing Sec.  49.6(a)(2) requires mine rescue 
stations to be provided with sufficient supplies to sustain each team 
for 6 hours during rescue operations.
    MSHA believes that these supplies should be increased from 6 hours 
to 8 hours because rescue and recovery operations are time sensitive. 
The 2-hour increase in supplies would assure that mine rescue stations 
would be equipped with sufficient reserves of critical SCBA components 
for two complete replenishments of discharged SCBAs. An additional 2-
hour supply would increase the safety and effectiveness of the mine 
rescue team and would be consistent with the requirement for 4-hour 
SCBAs.
    Because the industry practice is to stock these supplies in bulk, 
MSHA estimates that there are no costs associated with this 
requirement. MSHA requests comment on this estimate.
4. Section 49.16(a)(3)
    Proposed Sec.  49.16(a)(3), which is derived from existing Sec.  
49.6(a)(3), would require coal mine rescue stations to be equipped with 
two extra, fully-charged, oxygen bottles for every six SCBA at the 
station. The existing standard requires one extra, fully-charged, 
oxygen bottle for every six SCBAs.
    MSHA believes that two extra oxygen bottles for every six SCBAs 
would assure an adequate reserve of a critical component for mine 
rescue teams during time-sensitive rescue or recovery operations. An 
additional reserve supply of oxygen would also enhance team safety in 
these critical emergency situations. The costs associated with this 
provision are discussed later in the Preliminary Regulatory Economic 
Analysis section of this preamble.
5. Section 49.16(a)(4)
    Proposed Sec.  49.16(a)(4), which is derived from existing Sec.  
49.6(a)(4), would make no change from the existing standard.
6. Section 49.16(a)(5)
    Proposed Sec.  49.16(a)(5), which is derived from existing Sec.  
49.6(a)(5), would make no change from the existing standard.
7. Section 49.16(a)(6)
    Proposed Sec.  49.16(a)(6), which is derived from existing Sec.  
49.6(a)(6), would require mine rescue stations serving underground coal 
mines to be equipped with four gas detectors appropriate for each gas 
which may be encountered at the mines served. For methane, carbon 
monoxide, and oxygen deficiency, the proposal would specify that the 
gas detectors must be able to measure methane concentrations from 0 
percent to 100 percent of volume, oxygen from 0 percent to at least 20 
percent of volume, and carbon monoxide from 0 ppm to at least 10,000 
ppm.
    Existing Sec.  49.6(a)(6) requires mine rescue stations to be 
provided with two gas detectors appropriate for each gas which may be 
encountered at the mines served. The existing rule does not specify the 
type of detector or gases to be detected, leaving this decision to the 
discretion of mine operators. The existing rule also does not require 
selected detectors to measure a specific concentration of any gas. On 
more than one occasion, not having the equipment to measure high 
concentrations of one or more critical gases has hindered the 
collection of vital information. Mine rescue team members have had to 
delay entering the mine until equipment was located to measure the 
gases' concentrations and the team was able to evaluate the danger.
    It has been MSHA's experience that the number of gas detectors used 
in an underground emergency can vary depending on the needs of the 
individual mine rescue teams and conditions present at the mine. Mine 
rescue stations are typically equipped with two gas detectors. Based on 
MSHA's experience, elevated concentrations of hazardous gases such as 
high concentrations of methane and carbon monoxide are generally found 
in underground coal mines, especially following a fire or explosion. 
Team safety and efficiency would be better assured, however, if mine 
rescue stations were equipped with four gas detectors, two per mine 
rescue team, for each gas that may be encountered at the mines served 
so each team would be equipped with a backup device. Re-charging gas 
detectors and checking their calibration between rotations can delay 
rescue or recovery activities.
    Mine rescue teams serving coal mines generally would need gas 
detectors capable of measuring oxygen, methane, and carbon monoxide. 
Multi-gas detectors, which are capable of measuring higher 
concentrations of methane and carbon monoxide, and lower concentrations 
of oxygen, would

[[Page 51343]]

provide greater protection to rescue team members.
    An approved, handheld, multi-gas detector would enable mine rescue 
teams to accurately and simultaneously measure the relevant 
concentrations of critical mine gases, such as carbon monoxide, 
methane, and oxygen, which would increase their chance of survival in 
time-sensitive emergency situations. Up-to-date information regarding 
hazardous gas concentrations allows affected team members to make 
better informed and more timely decisions regarding when to don 
protective equipment, and enter or exit a mine. Costs associated with 
this requirement are discussed later in the Preliminary Economic 
Analysis section of this preamble.
8. Section 49.16(a)(7)
    The proposed rule would reserve Sec.  49.16(a)(7) because the 
proposed rule would remove the existing provision.
9. Section 49.16(a)(8)
    Proposed Sec.  49.16(a)(8), which is derived from existing Sec.  
49.6(a)(8), would require that mine rescue team equipment include a 
communication system. The proposed rule would re-number the existing 
provisions, but would make no substantive changes to the existing 
requirements.
10. Section 49.16(a)(9)
    Proposed Sec.  49.16(a)(9), which is derived from existing Sec.  
49.6(a)(9), would make no change to the existing standard.
11. Section 49.16(b)
    Proposed Sec.  49.16(b), which is derived from existing Sec.  
49.6(b), would require that mine rescue team equipment be maintained in 
a manner that will ensure readiness for immediate use. The proposed 
rule would re-number the existing provisions, but would make no changes 
to the substantive requirements.

V. Preliminary Regulatory Economic Analysis

A. Executive Order 12866

    Executive Order (E.O.) 12866 (58 FR 51735) as amended by E.O. 13258 
(Amending Executive Order 12866 on Regulatory Planning and Review (67 
FR 9385)) requires that regulatory agencies assess both the costs and 
benefits of regulations. E.O. 12866 classifies a rule as a significant 
regulatory action requiring review by the Office of Management and 
Budget if it has an annual effect on the economy of $100 million or 
more; creates a serious inconsistency or interferes with an action of 
another agency; materially alters the budgetary impact of entitlements 
or the rights of entitlement recipients; or raises novel legal or 
policy issues. MSHA has determined that the proposed rule would not 
have an annual effect of $100 million or more on the economy and that, 
therefore, it is not an economically ``significant regulatory action'' 
pursuant to section 3(f) of E.O. 12866. MSHA, however, has concluded 
that the proposed rule is ``otherwise significant'' under E.O. 12866 
because it raises novel legal or policy issues.

B. Population-at-Risk

    The proposed rule would apply to 653 underground coal mines and 240 
underground M/NM mines, using 2006 data. It would cover 42,597 coal 
miners, 14,323 M/NM miners, and 13,940 coal and M/NM (non-office) 
contractors working in these mines.

C. Compliance Costs

    MSHA estimates that the total yearly cost of the proposed rule 
would be $426,464. Of that total, an estimated $57,630 would be 
attributable to State and local governments that maintain mine rescue 
stations. The remaining $368,834 would be attributable to mine 
operators as follows: $237,437 for coal operator-owned mine rescue 
stations and $131,397 for M/NM operator-owned mine rescue stations. The 
derivation of these cost estimates is described below.
    Proposed Sec.  49.16(a) would allow mine rescue stations serving 
certain underground anthracite coal mines to have the type and amount 
of equipment that would be appropriate for the number of their mine 
rescue team members. This option allows mine rescue stations associated 
with mine rescue teams having a reduced number of members to maintain 
fewer SCBAs, cap lamps, and chargers than required under Sec. Sec.  
49.16(a)(1) and (a)(5) for other coal mine rescue stations. Because 
existing petitions for modification include this reduced equipment, 
MSHA estimates that there would be no cost savings associated with this 
provision.
    Proposed Sec. Sec.  49.6(a)(1) and 49.16(a)(1) would require that 
mine rescue stations serving underground M/NM and coal mines, 
respectively, be equipped with 12 SCBAs, each with a minimum 4-hour 
capacity, and associated testing equipment. Because MSHA has determined 
that all mine rescue stations serving M/NM and coal mines are already 
equipped with MSHA and NIOSH approved 4-hour SCBAs, the Agency 
estimates that there would be no cost associated with this requirement.
    Proposed Sec. Sec.  49.6(a)(2) and 49.16(a)(2) would require mine 
rescue stations serving either underground coal or underground M/NM 
mines to increase their supply of liquid air, liquid oxygen, 
pressurized oxygen, or oxygen generating chemicals, and carbon dioxide 
absorbent chemicals from 6 hours to 8 hours. Because the industry 
practice is to stock these supplies in bulk, MSHA estimates that there 
are no costs associated with these requirements. MSHA requests comments 
on this estimate.
    Proposed Sec. Sec.  49.6(a)(3) and 49.16(a)(3) would require that 
two additional fully-charged oxygen cylinders be provided for every six 
self-contained breathing apparatus. To meet these requirements, each 
mine rescue station would have to purchase two oxygen cylinders. MSHA 
estimates that the cost for two oxygen cylinders is $3,225 and that 
their service-life is 15 years.
    Proposed Sec. Sec.  49.6(a)(6) and 49.16(a)(6) would require all 
mine rescue stations serving underground coal mines or underground M/NM 
mines to be equipped with four gas detectors appropriate for each type 
of gas that may be encountered at the mines served. Gas detectors must 
measure concentrations of methane from 0.0 percent to 100 percent of 
volume, oxygen from 0.0 percent to at least 20 percent of volume, and 
carbon monoxide from 0.0 parts per million to at least 10,000 parts per 
million.
    MSHA estimates that mine rescue stations would be equipped with 
multi-gas detectors, rather than multiple single-gas detectors; that 
the cost for four multi-gas detectors is approximately $8,000; and that 
their service life is 5 years. MSHA requests comment on the Agency's 
cost estimates. MSHA is particularly interested in comment on its 
assumption that all mine rescue stations, including those serving non-
gassy M/NM mines, would need to be equipped with multi-gas detectors 
rather than single gas detectors.
    MSHA is proposing to delete paragraphs Sec. Sec.  49.6(a)(7) and 
49.16(a)(7), requiring mine rescue stations to be equipped with either 
two oxygen indicators or two flame safety lamps. MSHA believes that 
most mine rescue stations have already replaced flame safety lamps and 
oxygen indicators with new, more accurate, technologically advanced 
devices. For this reason, MSHA has associated no economic impact with 
the removal of these paragraphs.
    Table I summarizes the total yearly cost of this proposed rule.

[[Page 51344]]

[GRAPHIC] [TIFF OMITTED] TP06SE07.005

D. Benefits

    The purpose of this proposed rule is to improve and enhance the 
equipment for mine rescue teams who must respond to an emergency at an 
underground mine. Mine operators often rely on mine rescue teams to 
save miners during an underground emergency such as an explosion, fire, 
roof fall, or water inundation. Mine rescue team members often put 
themselves in danger to save miners injured or trapped underground as 
the result of these events. To help them to conduct mine rescue and 
recovery activities safely and effectively, they must be provided with 
up-to-date mine rescue equipment. In an emergency, a properly equipped 
mine rescue team could mean the difference between life and death.

VI. Feasibility

    MSHA has concluded that the requirements of the proposed rule are 
technologically and economically feasible.

A. Technological Feasibility

    The proposed rule is technologically feasible because all mine 
rescue team equipment required in this proposal is commercially 
available and in use in many mines. In addition, the proposed rule is 
not technology-forcing and does not involve activities on the frontiers 
of scientific knowledge.

B. Economic Feasibility

    The total cost of the proposed rule is approximately $237 thousand 
annually for underground coal mine operators and $131 thousand annually 
for underground M/NM operators. These compliance costs are well under 
one percent of the annual revenues of $13.1 billion for underground 
coal mine operators and $5.8 billion for underground M/NM operators. 
MSHA concludes that the amount of these costs relative to annual 
operator revenues supports its finding that the proposed rule is 
economically feasible.

[[Page 51345]]

VII. Regulatory Flexibility Act and Small Business Regulatory 
Enforcement Fairness Act

    Pursuant to the Regulatory Flexibility Act (RFA) of 1980 as amended 
by the Small Business Regulatory Enforcement Fairness Act (SBREFA), 
MSHA has analyzed the impact of the proposed rule on small businesses. 
Further, MSHA has made a determination with respect to whether or not 
the Agency can certify that the proposed rule would not have a 
significant economic impact on a substantial number of small entities 
that are covered by this rulemaking. Under the SBREFA amendments to the 
RFA, MSHA must include in the rule a factual basis for this 
certification. If a rule has a significant economic impact on a 
substantial number of small entities, MSHA must develop a regulatory 
flexibility analysis.

A. Definition of a Small Mine

    Under the RFA, in analyzing the impact of a rule on small entities, 
MSHA must use the Small Business Administration (SBA) definition for a 
small entity or, after consultation with the SBA Office of Advocacy, 
establish an alternative definition for the mining industry by 
publishing that definition in the Federal Register for notice and 
comment. MSHA has not taken such an action and, thus, is required to 
use the SBA definition. The SBA defines a small entity in the mining 
industry as an establishment with 500 or fewer employees.
    MSHA has also looked at the impacts of Agency rules on a subset of 
mines with 500 or fewer employees--those with fewer than 20 employees, 
which MSHA and the mining community have traditionally referred to as 
``small mines.'' These small mines differ from larger mines not only in 
the number of employees, but also in economies of scale in material 
produced, in the type and amount of production equipment, and in supply 
inventory. Therefore, their costs of complying with MSHA's rules and 
the impact of the Agency's rules on them will also tend to be 
different. It is for this reason that small mines employing fewer than 
20 miners are of special concern to MSHA.
    This analysis complies with the legal requirements of the RFA for 
an analysis of the impacts on small entities while continuing MSHA's 
traditional definition of small mines. The Agency concludes that it can 
certify that the proposed rule would not have a significant economic 
impact on a substantial number of small entities that are covered by 
this rulemaking. MSHA has determined that this is the case both for 
mines affected by this rulemaking with fewer than 20 employees and for 
mines affected by this rulemaking with 500 or fewer employees.

B. Factual Basis for Certification

    MSHA's analysis of impacts on small entities begins with a 
screening analysis. The screening compares the estimated compliance 
costs of a rule for small entities in the sector affected by the rule 
to the estimated revenues for the affected sector. When estimated 
compliance costs or savings are less than one percent of the estimated 
revenues, the Agency believes it is generally appropriate to conclude 
that there is no significant economic impact on a substantial number of 
small entities. When estimated compliance costs or savings exceed one 
percent of revenues, it tends to indicate that further analysis may be 
warranted. MSHA has determined that the estimated costs are less than 
one percent of the estimated revenues for small entities covered by 
this proposed rule. Therefore, MSHA certifies that this proposed rule 
would not have a significant economic impact on a substantial number of 
small entities.
    Coal mining revenues are derived from data on the price of coal and 
total coal production. Total underground coal production in 2006 was 
359-million tons. The price of underground coal in 2005 was $36.42 per 
ton.\1\ Thus, based on the total amount of coal production and the cost 
of coal per ton, the total estimated revenue in 2006 for underground 
coal production was $13.1 billion. Using the same approach, the 
estimated 2006 underground coal revenue by employment size category was 
approximately $0.3 billion for the 220 mines with 1-19 total employees 
and $10.1 billion for the 640 mines with 1-500 total employees.
---------------------------------------------------------------------------

    \1\ U.S. Dept. of Energy, Energy Information Administration, 
``Annual Coal Report 2005,'' Table 28, October 2006.
---------------------------------------------------------------------------

    For M/NM underground mines covered by the rule, the 2006 estimated 
revenue of $5.8 billion was divided by the total number of employee 
hours to arrive at the average revenue per hour of employee production 
of $176.63. This average hourly revenue was multiplied by employee 
hours in specific mine size categories to arrive at estimated revenues 
for these categories. This approach was used because MSHA does not 
collect mine-specific data on M/NM production or revenues. Using this 
approach, the 2006 revenues were estimated to be $0.3 billion for the 
105 underground M/NM mines with 1-19 employees and $4.4 billion for the 
235 underground M/NM mines with 1-500 employees.
    When dividing the yearly compliance costs by the annual revenues in 
each mine size category, the yearly cost of the rule for underground 
coal mines and underground M/NM mines, both with 1-19 total employees 
and with 1-500 total employees, is well less than 0.01 percent of 
annual revenues. MSHA therefore concludes and certifies that the 
proposed rule would not have a significant economic impact on a 
substantial number of small entities that are covered by the proposed 
rule.

VIII. Paperwork Reduction Act of 1995

    The mine rescue team equipment proposed rule would require 
certification of inspection, testing, and any corrective action taken 
for breathing apparatus, as does the existing rule. MSHA estimates that 
any paperwork burden due to the proposed requirements would be de 
minimis and, therefore, has not included additional paperwork burden.

IX. Other Regulatory Considerations

A. The Unfunded Mandates Reform Act of 1995

    MSHA has reviewed the proposed rule under the Unfunded Mandates 
Reform Act of 1995 (2 U.S.C. 1501 et seq.). The proposed rule would not 
increase private sector expenditures by more than $100 million 
annually; nor would it significantly or uniquely affect small 
governments. The proposed rule may result in increased expenditures by 
State, local, or tribal governments, however, because it places new 
requirements on equipment for mine rescue stations. These proposed 
changes would not directly affect States or their relationships with 
the national government; however, some mine rescue stations are State 
owned and equipped. In the spirit of the Unfunded Mandates Reform Act, 
MSHA specifically solicits comments on this proposed rule from State 
officials.

B. The Treasury and General Government Appropriations Act of 1999: 
Assessment of Federal Regulations and Policies on Families

    This proposed rule would have no affect on family well-being or 
stability, marital commitment, parental rights or authority, or income 
or poverty of families and children. Accordingly, Section 654 of the 
Treasury and General Government Appropriations Act of 1999 (5 U.S.C. 
note) requires no further Agency action, analysis, or assessment.

[[Page 51346]]

C. Executive Order 12630: Government Actions and Interference With 
Constitutionally Protected Property Rights

    This proposed rule would not implement a policy with takings 
implications. Accordingly, E.O. 12630, Governmental Actions and 
Interference with Constitutionally Protected Property Rights, requires 
no further Agency action or analysis.

D. Executive Order 12988: Civil Justice Reform

    This proposed rule was written to provide a clear legal standard 
for affected conduct and was carefully reviewed to eliminate drafting 
errors and ambiguities, so as to minimize litigation and undue burden 
on the Federal court system. Accordingly, this proposed rule would meet 
the applicable standards provided in Section 3 of E.O. 12988, Civil 
Justice Reform.

E. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    This proposed rule would have no adverse impact on children. 
Accordingly, E.O. 13045, Protection of Children from Environmental 
Health Risks and Safety Risks, as amended by E.O. 13229 and 13296, 
requires no further Agency action or analysis.

F. Executive Order 13132: Federalism

    Executive Order (E.O.) 13132 requires MSHA to develop an 
accountable process to ensure a meaningful and timely input by State 
and local officials in the development of regulatory policies that have 
``federalism implications.'' Policies that have federalism implications 
are defined as having ``substantial direct effects on the States, on 
the relationship between the national government and the States, or on 
the distribution of power and responsibilities among the various levels 
of government.'' The proposed rule would place new requirements on 
equipment for mine rescue stations. These proposed changes would not 
directly affect States or their relationships with the federal 
government. Although the proposed rule does not directly affect States, 
some mine rescue stations are State owned and equipped. Consistent with 
the spirit of E.O. 13132, MSHA specifically solicits comments on this 
proposed rule from State officials.

G. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This proposed rule would not have ``tribal implications'' because 
it would not ``have substantial direct effects on one or more Indian 
tribes, on the relationship between the Federal government and Indian 
tribes, or on the distribution of power and responsibilities between 
the Federal government and Indian tribes.'' Accordingly, E.O. 13175, 
Consultation and Coordination with Indian Tribal Governments, requires 
no further Agency action or analysis.

H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

    This proposed rule has been reviewed for its impact on the supply, 
distribution, and use of energy because it applies to the underground 
coal mining sector. Insofar as this proposed rule would result in 
yearly costs of approximately $0.24 million to the underground coal 
mining industry, relative to annual revenues of $13.1 billion in 2006, 
it is not a ``significant energy action'' because it is not ``likely to 
have a significant adverse effect on the supply, distribution, or use 
of energy * * * (including a shortfall in supply, price increases, and 
increased use of foreign supplies).'' Accordingly, E.O. 13211, Actions 
Concerning Regulations That Significantly Affect Energy Supply, 
Distribution, or Use, requires no further Agency action or analysis.

List of Subjects in 30 CFR Part 49

    Coal mines, Emergency equipment and maintenance, Emergency response 
services, Metal mines, Mine safety and health, Nonmetal mines, 
Underground mining.

    Dated: August 29, 2007.
Richard E. Stickler,
Assistant Secretary for Mine Safety and Health.
    For the reasons set out in the preamble, and under the authority of 
the Federal Mine Safety and Health Act of 1977, as amended by the Mine 
Improvement and New Emergency Response Act of 2006, MSHA is proposing 
to amend chapter I of title 30 of the Code of Federal Regulations as 
follows:

PART 49--MINE RESCUE TEAMS

    1. The authority for part 49 continues to read as follows:

    Authority: 30 U.S.C. 811, 825(e), 957.

    2. Amend Sec.  49.6 as follows:
    A. Revise the section heading.
    B. In paragraph (a)(1), remove the phrase ``2 hours capacity'' and 
add in its place ``4 hour capacity''.
    C. In paragraph (a)(1), remove the phrase ``self contained oxygen 
breathing apparatus'' and add in its place ``self-contained breathing 
apparatus''.
    D. In paragraph (a)(2), remove the phrase ``oxygen generating or 
carbon dioxide absorbent chemicals, as applicable to the supplied 
breathing apparatus and sufficient to sustain each team for six hours'' 
and add in its place the phrase ``or oxygen generating chemicals, and 
carbon dioxide absorbent chemicals, as applicable to the supplied 
breathing apparatus and sufficient to sustain each team for 8 hours''.
    E. Revise paragraph (a)(3).
    F. Revise paragraph (a)(6).
    G. Remove and reserve paragraph (a)(7).
    H. Revise paragraph (a)(8).
    I. Revise paragraph (b).
    The revisions read as follows:


Sec.  49.6  Equipment and maintenance requirements for metal and 
nonmetal mine rescue stations.

    (a) * * *
    (3) Two extra, fully-charged oxygen bottles for every six self-
contained breathing apparatus;
* * * * *
    (6) Four gas detectors appropriate for each type of gas that may be 
encountered at the mines served. Gas detectors must measure 
concentrations of methane from 0.0 percent to 100 percent of volume, 
oxygen from 0.0 percent to at least 20 percent of volume, and carbon 
monoxide from 0.0 parts per million to at least 10,000 parts per 
million.
* * * * *
    (8) One portable mine rescue communication system (approved under 
part 23 of this title) or a sound-powered communication system.
* * * * *
    (b) Mine rescue apparatus and equipment shall be maintained in a 
manner that will ensure readiness for immediate use.
    (1) A person trained in the use and care of breathing apparatus 
shall inspect and test the apparatus at intervals not exceeding 30 days 
and shall certify by signature and date that the inspections and tests 
were done.
    (2) When the inspection indicates that a corrective action is 
necessary, the corrective action shall be made and the person shall 
record the corrective action taken.

[[Page 51347]]

    (3) The certification and the record of corrective action shall be 
maintained at the mine rescue station for a period of one year and made 
available on request to an authorized representative of the Secretary.
    (i) The wires or cable to the communication system shall be of 
sufficient tensile strength to be used as a manual communication 
system.
    (ii) These communication systems shall be at least 1,000 feet in 
length.
    3. Add Sec.  49.16 to read as follows:


Sec.  49.16  Equipment and maintenance requirements for coal mine 
rescue stations.

    (a) Each mine rescue station shall be provided with at least the 
following equipment. Mine rescue stations serving underground 
anthracite coal mines, which have no electrical equipment at the face 
or working section, shall have at least the amount of equipment 
appropriate for the number of mine rescue team members.
    (1) Twelve self-contained breathing apparatus, each with a minimum 
of 4 hours capacity (approved by MSHA and NIOSH under 42 CFR part 84, 
subpart H), and any necessary equipment for testing such breathing 
apparatus.
    (2) A portable supply of liquid air, liquid oxygen, pressurized 
oxygen, or oxygen generating chemicals, and carbon dioxide absorbent 
chemicals, as applicable to the supplied breathing apparatus and 
sufficient to sustain each team for 8 hours while using the breathing 
apparatus during rescue operations.
    (3) Two extra, fully-charged oxygen bottles for every six self-
contained breathing apparatus.
    (4) One oxygen pump or a cascading system, compatible with the 
supplied breathing apparatus.
    (5) Twelve permissible cap lamps and a charging rack.
    (6) Four gas detectors appropriate for each type of gas that may be 
encountered at the mines served. Gas detectors must measure 
concentrations of methane from 0.0 percent to 100 percent of volume, 
oxygen from 0.0 percent to at least 20 percent of volume, and carbon 
monoxide from 0.0 parts per million to at least 10,000 parts per 
million.
    (7) [Reserved].
    (8) One portable mine rescue communication system (approved under 
part 23 of this title) or a sound-powered communication system.
    (i) The wires or cable to the communication system shall be of 
sufficient tensile strength to be used as a manual communication 
system.
    (ii) These communication systems shall be at least 1,000 feet in 
length.
    (9) Necessary spare parts and tools for repairing the breathing 
apparatus and communication system.
    (b) Mine rescue apparatus and equipment shall be maintained in a 
manner that will ensure readiness for immediate use.
    (1) A person trained in the use and care of breathing apparatus 
shall inspect and test the apparatus at intervals not exceeding 30 days 
and shall certify by signature and date that the inspections and tests 
were done.
    (2) When the inspection indicates that a corrective action is 
necessary, the corrective action shall be made and the person shall 
record the corrective action taken.
    (3) The certification and the record of corrective action shall be 
maintained at the mine rescue station for a period of 1 year and made 
available on request to an authorized representative of the Secretary.

[FR Doc. 07-4318 Filed 9-4-07; 12:30 pm]
BILLING CODE 4510-43-P