This June 27, 2017 photo shows an oil rig at sunset in Midland, Texas. In the first six months of this year, more than 1,000 people working or applying for jobs in the oil-producing business failed urine-based drug tests, double the pace of failures last year, according to Houston-based DISA Global Solutions, the largest provider of drug-testing policies to U.S. oil producers (Steve Gonzales/Houston Chronicle via AP)
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