Transactions . B — 0 u — OJ c u u .- (iHA\i:v Mining Mkthods 397. 398 The Canadian Mining Institute double tracked stretch of 900 feet of which three hundred is tim-bered with sets and top lagging. Sill Floor Work.—On the sill floors the haulage tunnels arealways being driven ahead. On the levels where the big cars runthese are about 9 ft. x 11 ft. in size. For a drift of this size atwenty hole round is used. This is made up of four lifters, fourcuts, eight breast holes in two rows and four back holes. All therock broken on the sill floor is hand shovelled. For handling theore different types
Transactions . B — 0 u — OJ c u u .- (iHA\i:v Mining Mkthods 397. 398 The Canadian Mining Institute double tracked stretch of 900 feet of which three hundred is tim-bered with sets and top lagging. Sill Floor Work.—On the sill floors the haulage tunnels arealways being driven ahead. On the levels where the big cars runthese are about 9 ft. x 11 ft. in size. For a drift of this size atwenty hole round is used. This is made up of four lifters, fourcuts, eight breast holes in two rows and four back holes. All therock broken on the sill floor is hand shovelled. For handling theore different types of cars are in use. On the No. 3 Tunnel levelten ton, steel, hopper bottom and seven ton, wooden, gable bot-tom cars are operated. These run on a three foot gauge and areoperated by an electric locomotive. Owing to the six foot heightof the steel cars they could not be used for shovelling into fromthe sill floor and for this reason the lower wooden cars were are not adapted for loading from chutes as on account oftheir low height the muck is liable
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Keywords: ., book, bookcentury1800, booksubjectmineralindustries, bookyear1895
