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)
Choices:
- Built
- Constructed
- Erected
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