Accidents involving falls of roof, face, and rib in underground mines or falls of highwall in surface mines, historically, have been among the leading causes of injuries and deaths. Prevention or control of falls of roof, face, and rib is uniquely difficult because of the variety of conditions encountered in mines that can affect the stability of various types of strata and the changing nature of the forces affecting ground stability at any given operation and time. Roof and rock bolts and accessories are an integral part of ground control systems and are used to prevent the fall of roof, face, and rib. Advancements in technology of roof and rock bolts and accessories have aided in reducing the hazards associated with falls of roof, face, and rib.
US Code:
30 USC 811(a)
Name of Law: Federal Mine Safety & Health Act of 1977
US Code:
30 USC 813(h)
Name of Law: Federal Mine Safety & Health Act of 1977
The reason for the decreases is directly related to the decrease in the number of active underground coal mines.
Responses: There was a decrease of 41,386 responses (from 129,060 to 87,674).
Respondents: There was a decrease of 371 respondents (from 1,215 to 844).
Burden Hours: There was a decrease of 248 burden hours (from 785 to 537).
Costs: The cost of $0 remains unchanged.
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