Dirty, dangerous and demeaning - Wikipedia
Oil rig drillers can be covered in oil and mud and they work beside dangerous machinery in harsh environments. "Dirty, dangerous and demeaning" (often "dirty, dangerous and demanding" or "dirty, dangerous and difficult"), also known as the 3Ds, is an American neologism derived from the Asian concept, and refers to certain kinds of labor often performed by unionized blue-collar workers. The term or
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Blue-collar worker - Wikipedia
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