a woman assistant holds an aluminum stepladder with her hands, insuring a worker, a man, a builder in a dirty robe standing on the

aluminum assistant build builder construction craftsman dirty engineer equipment factory fire flash focus grinding hands heavy holds industrial industry insuring iron job joint labor light machine man manufacture manufacturing material mechanic metal metalwork occupation outdoors people protection protective repair repairing repairman robe safety selective site skill spark standing steel stepladder steps structure technical technician technology trained unsafe welder woman work worker working workplace