MAKE A MEME View Large Image Coal miner spraying rock dust.jpg en A coal miner in West Virginia spraying rockdust to reduce the combustible fraction of coal dust in the air 2009-03-31 11 19 11 http //www flickr com/photos/niosh/8743393753/ National Institute for ...
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Keywords: Coal miner spraying rock dust.jpg en A coal miner in West Virginia spraying rockdust to reduce the combustible fraction of coal dust in the air 2009-03-31 11 19 11 http //www flickr com/photos/niosh/8743393753/ National Institute for Occupational Safety and Health PD-USGov Uploaded with UploadWizard Mining
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