Transactions . g, and hand-ling of the boxes will be treated in later sections. The method employed in opening the longwall face was asfollows:—Nos. 1, 2, 3, 4, 5 and 6 gates were driven for 75 feet,leaving barrier pillars to support the entry. Face opened driven by punchers and worked towards the rise, the coalbeing undercut by a rotary disc undercutter made by the DiamondMachine Company. As the face progressed, it worked towardsthe north and at present has reached the 16th gate. The gateswere spaced 50 feet apart up to No. 6 gate, but from this point tocontinue at 80 feet. No. 1
Transactions . g, and hand-ling of the boxes will be treated in later sections. The method employed in opening the longwall face was asfollows:—Nos. 1, 2, 3, 4, 5 and 6 gates were driven for 75 feet,leaving barrier pillars to support the entry. Face opened driven by punchers and worked towards the rise, the coalbeing undercut by a rotary disc undercutter made by the DiamondMachine Company. As the face progressed, it worked towardsthe north and at present has reached the 16th gate. The gateswere spaced 50 feet apart up to No. 6 gate, but from this point tocontinue at 80 feet. No. 1 gate serves as 1st machine stable onthe south end of face, and each successive gate as it is the .same purpose for No. 4 machine on the north end. gate carriefl forward 75 feet from entry pillars, and crossgate turned off to left at an angle of 50°. This reduced the gradeof the cross-gate by running at nearest possible approach to strike (>; offdofo. 1o. too. 3100. cor- rse, gto the the aJU o225 S 71 •J iiI
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Keywords: ., book, bookcentury1800, booksubjectmineralindustries, bookyear1895
