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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ r ~ ~ ~ ~ ~ ~ Figure 2.04.3(3)(a)-6 $EAR'COAL COMPANY, INC. MARCH 1~-. 1975 BEAR MINE INSTALLATION OF TEMPORARY SUPPORT 4T FACES (Full bolting on 4-foot centers) 1 0 0 o O o .Z <o ^ ^ ^ ^ 3. i) if .a . a ^ ^ o ^ 4. q i. io i2 ^ ^ ^ ^ r ~ ~ e 5. ^ ~- ^ ^ ^ ~ c . 6. ^ ^ ^ ^ /NCN ° B FL LT 7• ^ fermanLn~ SuPparf R. ^ Poinf for fufure Permanam~- SuPpor+ Tem~orary support }; Fufurt femporarr 3uppor~ ® Timber for curfarn ~ ~' The temporary supports in row (c) shall be installed as minine advances, and after completion of the cut the temporary supports shall be installed to within 5 Eeet of the Eace to provide portection to miners making required tests. Immediately after completion of thr cu[, the temporary sv~~orts in row (a) b (b) shall be installed. The temporary support to row (a) shall be advanced to row (d) after the first row of permanent support is installed. This cycle shall continue until the entire cut is bolted. Temporary support maybe positioned to provide clearance for- bolting machines so long as they are maintained on 5 -foot centers and kept within 2-feet of the point where a permanent support will be installed. If the installation of permanent support is not started within 30 minutes after the completion of the cut, the entire cut shall be supported by temporary support on no less than 5-foot centers A[ least two rows of temporary supports shall be installed at all times during bolting except when the last row of permanent i support is being installed within S-feet of the face. ~ Only those persons engaged in installing temporary support shall be allowed to proceed beyond the last permanent support until such temporary supports are installed. Roof bolts shall be installed in the dequence shown, adverse ~ roof conditions may require change to provide adequate protect- ; ion for the miners.