Virginia Administrative Code
Title 4 - CONSERVATION AND NATURAL RESOURCES
Agency 25 - DEPARTMENT OF ENERGY
Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING
Part XV - Safety and Health Regulations-Underground Only
Article 4 - Explosives
Section 4VAC25-40-3475 - Blasting in gassy mines
Universal Citation: 4 VA Admin Code 4VAC25-40-3475
Current through Register Vol. 41, No. 3, September 23, 2024
Blasts in gassy mines shall be initiated electrically, and multiple shot blasts shall be initiated with millisecond delay detonators. Permissible blasting units of capacity suitable for the number of holes in a round to be blasted shall be used unless the round is fired from the surface when all persons are out of the mine.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
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