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<br />III. Methane and Dust Control Practices on the Working Section •~~.;T;`i
<br />,.,ri;, ,
<br />• A. Pages 19 through 26 addresses the mechanized mining unit.;~,,'~'%'~
<br />(MMU) requirements of the equipment on each mining sec-;";~a'~+•.~ 4
<br />lion. ;;fVy~~,~
<br />. .,.;~.
<br />$. Remote Control Mining '
<br />1. During remote control mining operations, face venti-':.:
<br />lation control devices shall be maintained to within,,
<br />30' of deepest point of penetration.
<br />2. A Foster Miller Spray Fan System will be utilized in,'.~
<br />conjunction with remote control mining. `~
<br />3'. The methane monitor will activate a strobe light•as'
<br />required in 75.313. It will be mounted in the cano=:~
<br />py of the continuous minet, and will be visible-to~:
<br />the operator when using remote control. s'«
<br />., Sd
<br />IV. Methane and Dust Control In the Outby Areas ~ir~
<br />1. Bleeder entry systems ,`,,;~,i~~y;`:
<br />a. Bleeder entry systems shall have additional support;=!':?e~~~
<br />i.e. cribs, timber, crossbars, etc., as roof condi-:';i~*`.~
<br />lions warrant. Aleeder entry systems shall be kept:•'^~~.a,
<br />:, ~'tiv,
<br />free of standing water. .,~...
<br />b. See the Ventilation Map for ventilating devices used~•;~:h ~
<br />to control air movement through the mined out area :';:;+~`~
<br />See the Ventilation Map for ventilating devices used~;t~?
<br />~,.+a.
<br />• to control aiz movement through the bleeder entries:~;;~
<br />c. See the Ventilation Map for details of the bleeder~',P "~
<br />entry systems. ~ ,~~,.';,:~.~~
<br />d. See Pages 34 through 39 for sketches of typical;.'?,;;ti"•,•
<br />bleeder systems. ~:s::~,.
<br />yi .
<br />e. All bleeder systems shall meet the criteria in 30~''.!,=v
<br />CFR 75.316-2 (e) through ( i) . ;,;y,~
<br />.I .^:1
<br />2. A21 normal haulage roads including, production haulage .,~^~~~'
<br />on the section and supply haulage from the section to ..; ,~;;
<br />the portals (surface) shall be maintained in a damp or '~"Y
<br />compact condition to maintain the average concentration ;,?~k:.ry
<br />of respirable dust in the intake airways at or below.,. •;:~,
<br />1.0mg/m3 of air. •• .ri;,+~t
<br />:~ .;i
<br />3. Transfer points, feeder breakers, belt lines, belt';;:cl':ti:{
<br />drives and any other dust producing areas along belt;
<br />entries will use water sprays and daily clean up to'~.:~"
<br />maintain the average concentration of respirable dust at';y~;~
<br />or below 2.0mg/m3 of air. :•;;,:,±.
<br />S,i i,4
<br />Mist type water spray - 2 Fog-Jet $2 or q3 or equiv-.'~i°'
<br />alent spray nozzles. ,.;,,!`~
<br />A minimum of 50 PSI water "'.L~,a'~.y~.t'
<br />pressure. ,,~;,
<br />At a minimum of 0.25 G.P.M,
<br />4. When the methane content in any return aircourse, other
<br />than an aircourse returning a split of air from a work-
<br />ing section (as provided in 75.309 and 75.310) exceeds'•~::~';~;
<br />2.0 volume er centum all '"~~~~
<br />P persons except those persons`::~~~'~:?r{.;
<br />. referred to in Section 104 (c) of The Act, shall be with=~~~'.",~=t!
<br />drawn Erom the area of the mine endangered thereby to.a.4"'?~?~i'
<br />safe area and aii electric power shall be cut off from4-rtfL'`!T"u,~;s
<br />Pa e 15 .;','t'u ~,
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