warning sign not enter without wearing hard hat accident could result serious injury death |
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| navigate by keyword : adult african american architect black building business caucasian construction contractor development employee engineer engineering face facility factory handsome hard hat hardhat heavy helmet industrial industry job machinery male man manufacture manufacturing modern occupation people person plant portrait production profession professional protection safety smiling specialist steel success successful technology uniform work worker |
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| Warning Sign Do Not Enter Without Wearing Hard Hat, Accident Could Result In Serious Injury Or Death |
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