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00. <br />ne <br />;t <br />_ ... <br />_ L3arion No. 3. <br />__ <br />_.-~_ _.-`- _- :GEOLOGY. - - <br />The formation ahead of this tunnel belongs to the <br />Archean and consists of granite, schist and gneiss whiah <br />I`are cut by porphyry dykes. The district is covered by <br />{Hriyden'e Geological Survey• <br />DEVELOPMENT. <br />The tunnel is now in a little ovor 200 feet. It <br />ie e} x,6 1~2 in the clesr and is well timbered where necessary. <br />METHODS OF MINING AND TTM]3~RItiG. <br />The tunnel 1s being drivon by air drills, the air being <br />furnished from an electrloal drivon aompressor and the <br />explosive used ie 40°f+ Du Pont Gelatine Powder. Framed <br />{tunnel aetc+ are used in timberin¢. The tunnel is eauinped <br />'with 12~~ Toe Rails and Tram oar. The powder is kept in a <br />rogulation powder house which stands mare than one hundred <br />foot from the tunnel entranoe and engine room. <br />EQUIP1dENT. <br />>;nglne House: <br />{ 10 x 0 Franklin Compressor, <br />20 13.P. Y7esting 13ouee Ltotor using 600 Volts direst ourrant. <br />Hlaakemith 6hops <br />Equipped with hand tools, <br />8 in. galvanised air pipe and a nuotion fan aro on tho <br />ground and will ba installed at anoe. <br />REMARKS. <br />{ or, are <br />~ At the prsaont timo only two mon bosidea the manag <br />I{employed but it is tho lntontian of the oompany to lnaroase the <br />iwarking foroo noon at whiah Limo they will likoly oomo undor the <br />~loomponsation law. Thoro are no notices or nizfety first signs <br />1,~posted. <br /> <br />