Nev. Admin. Code § 459.0385 - "Filtering facepiece" or "dust mask" defined
"Filtering facepiece" or "dust mask" means a negative pressure particulate respirator with a filter as an integral part of the facepiece or with the entire facepiece composed of the filtering medium, which is not equipped with elastomeric sealing surfaces and adjustable straps.
Notes
NRS 459.201
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