Coal Mine Rescue Test 1
Taken from the 2015 Harlan County Safety Days Contest in Cumberland, KY

Progress Indicator:
Question 1 of 20

1.  Temporary seals are built before permanent seals are __________ in order to seal off a fire area as quickly as possible.  (MSHA 2105, p. 36)

  1. Built
  2. Constructed
  3. Erected

See more about these products