Respirable Coal Mine Dust Certification Exam 6
Taken from the 2014 MSHA Instruction Guide (IG) 100
Progress Indicator:
Question 1 of 20
1. Each mine operator shall take _________ valid respirable coal mine dust sample(s) from each designated area during each bimonthly period.
Choices:
- 10
- 5
- 3
- 1
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