[jake] had a run-in with allergies in his wood shop, so he built his own positive air pressure respirator. He used a surplus gas mask, scsi squirrel cage fan, and an automotive air filter.

Onishi tested a range of masks: those made from cloth, non-woven masks, dust masks which met the N95 standard and other types, even the “Abenomasks” made of gauze distributed to every ...

roughly the size of a dust particle. But many experts think the delineation is arbitrary. Various studies also test masks under different circumstances: Some mimic the heavy air flow produced when ...

Respirators, more commonly known as face masks, are meant to keep health care and emergency workers safe from chemicals and infectious particles. Surgical masks can be helpful if you are sick ...

Rapidly growing Los Angeles wildfire explodes to 1,260 acres in hours Single-strap paper dust and surgical masks do not ...