(a) As used in this
section, "all occupations in connection with mining" means all work performed:
(1) Underground in mines and
quarries;
(2) On the surface at
underground mines and underground quarries;
(3) In or about open-cut mines, open
quarries, clay pits, and sand and gravel operations;
(4) At or about placer mining
operations;
(5) At or about
dredging operations for clay, sand, or gravel;
(6) At or about bore-hole mining
operations;
(7) In or about all
metal mills, washer plants, or grinding mills reducing the bulk of the
extracted minerals; and
(8) At or
about any other crushing, grinding, screening, sizing, washing, or cleaning
operations performed upon the extracted minerals except where such operations
are performed as a part of a manufacturing process.
The term does not include work performed in subsequent
manufacturing or processing operations, such as work performed in smelters,
electrometallurgical plants, refineries, reduction plants, cement mills, plants
where quarried stone is cut, sanded, and further processed, or plants
manufacturing clay, glass, or ceramic products. Neither does the term include
work performed in petroleum production, natural-gas production, nor dredging
operations which are not a part of mining operations, such as dredging for
construction or navigation purposes.
(b) All occupations in connection with mining
are declared hazardous for minors under eighteen years of age except the
following:
(1) Work in offices, in the
warehouse or supply house, in the change house, in the laboratory, and in
repair or maintenance shops not located underground;
(2) Work in the operation and maintenance of
living quarters;
(3) Work outside
the mine in surveying, in the repair and maintenance of roads, and in general
clean up about the mine property such as clearing brush and digging drainage
ditches;
(4) Work of track crews in
the building and maintaining of sections of railroad track located in those
areas of open-cut metal mines where mining and haulage activities are not being
conducted at the time and places that such building and maintenance work is
being done;
(5) Work in or about
surface placer mining operations other than placer dredging operations and
hydraulic placer mining operations; and
(6) The following work in metal mills other
than in mercury-recovery mills or mills using the cyanide process:
(A) Work involving the operation of jigs,
sludge tables, flotation cells, or drier-filters;
(B) Hand-sorting at picking table or picking
belt; and
(C) General clean up
work.
(c)
Nothing in this section shall be construed as permitting employment of minors
in any occupation deemed hazardous by any other section.
