Two hazards from which ear plugs protect the welder are hearing loss and _______ ________.

Leathers should always be worn when working in _________.

The fume plume may cause which of the following temporary side effects?

_________ is identified in the text as one of the more critical of the hazardous elements.

What is the unit of measure for fume exposure as determined by OSHA?

Manganes and chromium are two examples of materials which have very strict _____ _______ limits.

Which of the following is the best way to avoid respiratory hazards?

If a high-vacuum/low-volume smoke extraction system is used, where is the fume removed?

A welder opens the cylinder valve slightly and closes it immediately. What process did he/she perform?

A device that prevents the reverse flow of gases that would result in a combustible mixture in the welding hose is a ________.

If a welder were to look at the torch inlet or the regulator outlet, he or she would see a __________.

A condition in which the flame burns inside the tip, torch, or the hose is known as a __________.

When an accidental mixing of gases occurs in the hose or regulator, which of the following is the most likely cause?

A check valve is also known as a _________.