Construction People
workers, laborers, electricians, ironworkers, painters, carpenters, plumbers, pipefitters, bricklayers, blocklayers, trowel trades, plasters, boiler makers, operating engineers, truck drivers, teamsters, building trades, merit shop, open shop, non-union, crane operators, masons, welders, pile drivers,
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Construction welding: Electric arc welding all around of large bore underground steel pipe. Worker grinds top weld while lying down welder welds lower half. Pipe is supported by wood blocking/cribbing. Dixboro Bridge, Ann Arbor, 2004
cribbinglargeboreundergroundarcelectricpipesteelweldmethodsequipmentconstruction4571
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