§ 60.2 - Definitions.

Related Notices
- 2024-06920. Final rule. 2024-06920. Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection
- 2023-14199. Proposed rule; request for comments; notice of public hearings. 2023-14199. Lowering Miners' Exposure to Respirable Crystalline Silica and Improving Respiratory Protection

Latest version.

§ 60.2 Definitions.

The following definitions apply in this part:

Action level means an airborne concentration of respirable crystalline silica of 25 micrograms per cubic meter of air (µg/m³) for a full-shift exposure, calculated as an 8-hour time-weighted average (TWA).

Respirable crystalline silica means quartz, cristobalite, and/or tridymite contained in airborne particles that are determined to be respirable by a sampling device designed to meet the characteristics for respirable-particle-size-selective samplers that conform to the International Organization for Standardization (ISO) 7708:1995: Air Quality—Particle Size Fraction Definitions for Health-Related Sampling.

Specialist means an American Board-Certified Specialist in Pulmonary Disease or an American Board-Certified Specialist in Occupational Medicine.

                    
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§ 60.2 - Definitions.

§ 60.2 Definitions.