Metal and Nonmetal National Mine Rescue Contest Rules

7. Re move hose cou pler or red caps; con nect in ha la tionhose and then ex ha la tion hose to mask. Open ox y gencyl in der valve fully coun ter clock wise and back ¼ turn.Note whis tle chirp.Op tion: Hoses con nected to the facepiece prior to don ning.a. Don facemask as out lined above (item 2).b. Open cyl in der valve fully coun ter clock wise and back1/4 turn. Note whis tle chirp.c. Per form neg a tive pres sure check by pinch ing off thein ha la tion hose and in hal ing. If the wearer can notin hale, mask fit is good and ex ha la tion valve is OK.d. Per form pos i tive pres sure check pinch ing off theex ha la tion hose and ex hal ing. Mask should pushaway from face. If air does not es cape, mask fit isgood and in ha la tion valve is OK.8. Check chest-mounted pres sure gauge, 2700 - 3000 psi.within one min ute.9. The team cap tain should re check each team mem ber andap pa ra tus. A team mem ber should re check the team cap -tain and ap pa ra tus.Items to be checked before going underground and at20-minute intervals.1. Visually check apparatus.2. Check chest mounted pres sure gauge.3. Ques tion mem ber as to mem ber’s abil ity to con tinue.76