Guy, RENO Nailed it. Except for the complete sentence part, My spelling stinks and I try my best (not reely).

All true: in an environment such as research,manufactureing etc.. Be very carefull and DEMAND!!!!! the propper training.
or refuse the assignment.

I'm in a research area we have many biological,radiation hazards as well as chemical, with the production and research of the "micro-electronics", TONS of acids used for this stuff (always look ahead, NOT UP).

Always ask. If no answer. Then no work.

Nothing the employer can do. We have laws to protect you. Not to give any excuses for not doing your job.
Just info so you know YOUR RIGHTS! You do have them.