Category:Mining air pollution

Media in category "Mining air pollution"

The following 2 files are in this category, out of 2 total.

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  RAILROAD CROSSING SIGNAL IS COVERED WITH WHITE DUST FROM THE GYPSUM PLANT AT PLASTER CITY - NARA - 548849.jpg 1,995 × 3,000; 518 KB
  
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  White-dust-on-railroad-crossing-has-floated-over-from-gypsum-plant-at-plaster-city-may-1972 7136441375 o.jpg 2,007 × 3,000; 218 KB