Respirable Coal Mine Dust Certification Exam 7
Taken from the 2014 MSHA Instruction Guide (IG) 100

Progress Indicator:
Question 1 of 20

1.  As of August 1, 2016, the standard for respirable coal mine dust in the section intake air is _________ milligram(s) of dust per cubic meter of air.

  1. 0.3
  2. 0.5
  3. 1.0
  4. 1.5

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