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title 30
Mineral Resources
chapter I
CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
part 57
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
subpart Q
Subpart Q—Safety Programs
subjgrp 193
Surface Only
Subjgrp 193. Surface Only
§ 57.18020 - Working alone.
