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Study Shows Surface Coal Miners Are Exposed To Toxic Dust That Causes Black Lung

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National Mining Hall Of Fame And Museum The web site was designated a state of Michigan historic web site in 1973 and positioned on the National Register of Historic Places in 1992. We have a variety of rotating shows so there's something new to see each time you go http://beaukha10.bloggin-ads.com/26906043/digging

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