Forcible Entry No. 4 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 13 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