More safety warnings, welding related

Absolutely !!
When I was in gunsmithing school a student came in and said he felt very ill ,too ill to operate machinery. I started asking questions. He worked in an area where they cleaned parts with trichlorethylene. It was a very cold spell in Denver and they used portable heaters to keep the men warm. Twenty people became ill and none of them had a clue as to why !! I explained that the trichlor fumes would break down from the heater to produce phosgene gas .
 
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