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title 30
Mineral Resources
chapter I
CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
part 70
PART 70—MANDATORY HEALTH STANDARDS—UNDERGROUND COAL MINES
subpart B
Subpart B—Dust Standards
Subpart B. Subpart B—Dust Standards
§ 70.100 - Respirable dust standards.
§ 70.101 - Respirable dust standard when quartz is present.
