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TIIE BEAR CCAL COPiPANY, INC. Figure 2.04.3(3) (a)-7 <br />929-G115 Somerset, Colo 81'+34 <br />' ~ ~ March l~s, 1975 <br />SECTION AND FACE VENTILATION SYSTEM: / <br />' ~> <br />...-- <br />1 <br />' ~ _ <br />1 <br />' 1. <br />' 2. <br />3. <br />4. <br />' S. <br />' G. <br />1. <br />~/~Cf ARI!n, <br />~JO/C /.~nG <br />C ~r fo•n <br /> <br />,~- <br /> <br />~a <br />w.•~.-r <br />Jam. n F fneG <br />!~_ <br />Nov /v9e Cur ~a. n <br />r <br />Herewith is a drawing of face ventilation in-by of last open <br />cross-cut. <br />Line curtain shall be within 1.0 ft. of face. <br />Minimum of 3000 CFM each working face. <br />i•tinimum of 9000 CFT1 lest open cross-cut. <br />The belt haulage entry oir is isolated from in-take air by <br />by block stonpinbs and ulastered. The air flows from the <br />inby end to the outby end nr.cventing air from belt haulage <br />to circulate over working faces. <br />All adjacent pi,llarin~; and ebondoned works are on the return <br />air. it is being sncorated by bock stonpings and ulnstcred. <br />Permanent stopninSs arc used to separate intake and return <br />eireuurses. <br />Escnnc~~nys me designated by symbols. <br />