Hazardous Materials - Overview No. 1 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 2 of 13 2.  When any diesel-powered machine first enters service at a mine, _______________ determined by a qualified mechanic.  [417(b)] Choices: carbon monoxide (CO) emission values shall be baseline emission values shall be all gaseous emission values shall be primary emission values shall be