Browse Items (9489 total)

Oil immersed telephone switch.

Oil immersed telephone switch.

Oil immersed telephone switch.

Oil immersed telephone switch.

Boiler shop and machine shop from southwest with asphalt blending in background.

Boilermaker working on a staircase.

Use of air mover eductor by welder shop.

Method of clamping air mover eductor to a plate.

Method of clamping air mover eductor to a plate.

2 men with acetylene cylinder and oxygen cylinder.
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