[Hofi]

Waht Ever You Do Grind Or Send Blast Some Of The Toxic Metals Will Stay !!!
You Must Ventilate The Working Site ,open Windows And Doors .
I Have In My Smithy Big Ventilators That I Aim In A Way To Take The Fumes In The Other Direction Towards The Gig Windows. On Top Of It I Have Two Big Roof Ventilators That I Put On To Operate That Sucks The Fumes Trough The Ciling Port. Only Then Comes The Carbon Filter Mask, When The Ventilation Is Good You Do Not Need.

Uri Hofi