Your Amazon purchases made using this link will benefit the United States Mine Rescue Association

Coal Mine Rescue Test 2
Taken from the 2016 Harlan Safety Days Mine Rescue Contest in Cumberland, KY

Progress Indicator:
Question 1 of 20

1.  Seals should be _________ at locations with good roof and even roof and ribs.

  1. located
  2. erected
  3. built