2016 Mine Rescue Field Test No. 3 Taken from the 2016 Southwest Wyoming Mutual Aid Mine Rescue Contest held in Rock Springs, WY Progress Indicator: Question 3 of 30 3.  The purposes of sealing a mine fire are to ____________ the fire to a specific area and to exclude oxygen from the fire and eventually smother it.   (MSHA 3028, p. 5-6) Choices: isolate contain confine seclude