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On Jun 1, 2013 Xu Dan published: Research of Comprehensive Protection Device in Underground Coal Mine Lighting Power Grid
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Jul 09, 2012· Black Lung: Why Respirators Are Not A Solution Breathing devices may seem useful for protecting coal miners from the toxic dust that causes black lung.
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X. Dan "Research of Comprehensive Protection Device in Underground Coal Mine Lighting Power Grid", Applied Mechanics and Materials, Vol. 329, pp. 304307, 2013
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