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California Code of Regulations
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Chapter 4. Division of Industrial Safety
Subchapter 17. Mine Safety Orders
Article 31. Air Quality, Radiation, and Ventilation
Underground
Underground
State of California
7093
(5-3). Dust--Rock Drilling.
7094
(5-1). Dust--Mucking and Transferring Rock.
7095
(5-1). Dust, Smoke, and Gases After Primary Blasting.
7096
(5-1). Dust, Smoke, and Gases from Secondary Blasting.