Respirable Coal Mine Dust Certification Exam 5
Taken from the 2014 MSHA Instruction Guide (IG) 100
Progress Indicator:
Question 1 of 20
1. The regulations require _________ valid dust sample(s) from the designated occupation in each mechanized mining unit during each bimonthly period.
Choices:
- 1
- 3
- 5
- 10
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