Researchers examined how and why long work shifts increase the risk for injury among miners of all kinds. They found that injured miners who worked shifts longer than 9 hours tended to have irregular schedules or less than two years on the job.
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Researchers examined how and why long work shifts increase the risk for injury among miners of all kinds. They found that injured miners who worked shifts longer than 9 hours tended to have irregular schedules or less than two years on the job.