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

Rescue Field Test I
Used at the North Central Regional, Wilmington, IL


Progress Indicator:
Question 1 of 30

1.   Carbon dioxide:

Choices:
  1. is lighter than air.
  2. is heavier than nitrogen dioxide.
  3. can be liberated from rock strata.
  4. is likely to be found near the roof.