Arizona Administrative Code (Last Updated: November 17, 2016) |
Title 11. MINES |
Chapter 1. STATE MINE INSPECTOR |
Article 4. AIR QUALITY, VENTILATION AND RADIATION, AND PHYSICAL AGENTS |
Section R11-1-471. Exposure of radon daughters
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No employee shall be permitted to receive an exposure of radon daughters in excess of 4 WLM in any calendar year.