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Title 30: Mineral Resources
CHAPTER I: MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
SUBCHAPTER K: METAL AND NONMETAL MINE SAFETY AND HEALTH
PART 57: SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES
Subpart H: Loading, Hauling, and Dumping
: Safety Devices, Provisions, and Procedures for Roadways, Railroads, and Loading and Dumping Sites
57.9361 - Drawholes.
To prevent hazards to persons underground, collars of open drawholes shall be free of muck or materials except during transfer of the muck or material through the drawhole.
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