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https://ehssafetynewsamerica.com/2018/01/11/once-the-harm-has-been-done-even-a-fool-understands-it-the-origin-of-bostons-hot-work-certification-program-hotwork/
"Once The Harm Has Been Done, Even A Fool Understands It' - The Origin Of Boston's Hot Work Certification Program" #HotWork