N95 respirators and air purifying respirators (the respirator type most commonly used at UNR) are not designed to be used in an atmosphere: 5.2.a. That is immediately dangerous to life or health (IDLH ...

On April 16, 2024, the Mine Safety & Health Administration (“MSHA”) released its final rule for Respirable Crystalline Silica (“RCS”) for preliminary viewing, and it was published in the Federal ...

These hazards include particulates, vapors, gases, mists, dust, and fumes. Engineering controls (e.g., enclosure or confinement of the operation, general or local ventilation, and product substitution ...