Suddenly, in the cramped boiler room, a pressure-relief valve opens and discharges steam. Then, a certified technician approaches to perform a routine check. But, is he wearing his factory mask?
Factory Mask
1 mins
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Animation
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Jan. 1, 2002
Suddenly, in the cramped boiler room, a pressure-relief valve opens and discharges steam. Then, a certified technician approaches to perform a routine check. But, is he wearing his factory mask?