workplace accident hazard sign, safety precaution for rotating parts of machinery

work safety sign accident icon workplace injury hand rotating parts hazard danger warning caution gears crush moving watch fingers arm clear attention careful beware machine machinery factory mechanical mechanic equipment risk harm operation cut physical damage trauma hurt health vector logo symbol pictogram entanglement entrapment shaft cogs wheels roller prevent loss security banner placard silhouette icons signs logos clipart web design flat abstract clip art symbols computer graphic graphics drawing cartoon concept alert