Statements of Fact Quiz IV
From the 2014 Revised Coal Mine Rescue Statements of Fact


Progress Indicator:
Question 1 of 25

1.  The range of concentrations within which a gas will explode is known as its __________________. (MSHA 3028, p. 2-7)

Choices:
  1. expensive range
  2. explosive range
  3. danger zone
  4. combustible range


See more about these products


See the BioPak 240R on the web  External Link Icon Download the BioPak 240R Brochure


  Rescue Contests     Pop Quizzes     Mine Disasters   •  USMRA Membership     Links Library     Training Repository     Contact