Drager BG4 Statements of Fact 3 Questions taken from 2017 Drager BG4 Statements of Fact Progress Indicator: Question 8 of 15 8.  Acetylene would normally be found in a mine atmosphere where: Choices: diesel equipment is used methane has burned or exploded in air with a lowered oxygen content leakage has occurred from adjacent oil or gas wells battery charging stations are located