Respirable Coal Mine Dust Certification Exam 7
Taken from the 2014 MSHA Instruction Guide (IG) 100
Question 1 of 20
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.
See the BioPak 240R on the web
Download the BioPak 240R Brochure