Statements of Fact Quiz II
From the 2012 Revised Coal Mine Rescue Statements of Fact

Progress Indicator:
Question 1 of 25

1.  Permanent seals shall be ____________________ to protect miners from hazards related to the sealed area.   (MSHA 75.335)

  1. designed, constructed, and maintained
  2. hitched into the mine roof and ribs
  3. immediately installed
  4. dated and initialed

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