The number of workers employed in coal mining industry is less than the number of workers in than many other industries. For example, museums employed 91,966 compared to just 76,572 workers in the coal industry according an article I came across in The Washington Post. The 76K figure is not coal miners only but also includes office workers, sales people and others in the coal mining industry.
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Source: The entire coal industry employs fewer people than Arby’s, Washington Post
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