chay' respirator lugh wutlh SoH?


chay' respirator lugh wutlh SoH?
involves luch lugh wutlh:

1. nuq hazard 'ej extent qIlmeH pIj.

2. user factors 'e' respirator Sov wIHutlh qel
yIqaw reliability, 'ej je

3. appropriate niosh-certified respirator wIv.