rigger wearing harness safety helmet heavy duty glove working in fall arrest position insert pin into d-shackle prior lift

abseiling access arrest building closeup construction crane duty equipment fabric factory fall fastening first glove hand handle hanging harness heavy helmet hook industrial industry inserting inspectors lift load machine manufacture manufacturing mechanic metal mine nature nobody nylon pattern position prior reel rigger risk roll rope safety sewing shackle shape site sling soft stacked strap technology textile wearing worker working