File:Canadian mining journal January-June 1905 (1905) (14595451380).jpg

Identifier: canminingjjanjun1905donm (find matches)
Title: Canadian mining journal January-June 1905
Year: 1905 (1900s)
Authors:
Subjects: Mines and mineral resources
Publisher: (Don Mills, Ont., Southam Business Communications)
Contributing Library: Fisher - University of Toronto
Digitizing Sponsor: University of Toronto

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4thlevel, another on the 8th level and the third in the sump of theshaft, are sufficient to cope with all the water. A large new pump, to be run by electricity, is now beinginstalled at the 6th level station. When in place, this pumpwill do the pumping for the whole mine. Ventilation.—The mine is provided with a No. 4 Rootsblower, having a 14 inch delivery pipe. It runs about eighthours per day and supplies 150,000 cubic feet of air per hour.It is driven by 10 H.P. induction motor. The blower is re-versible and can thus be used either to force fresh air into themine or to exhaust the foul air. There is more or less natural ventilation up and down theshaft, due to its connections with the tunnels. When stopes orraises extend from level to level, a certain amount of ventila-tion is secured, but when these are not completed artificialventilation is required. Much time is saved by artificial venti-lation as the smoke and poisonous gas, generated by the ex- THE CANADIAN MININO REVIEW. 9
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ex- lO THECANADIAN MINING REVIEW. plosion of the powder, are quickly sucked out by the reversedblower, and the working place cleared so that work can beresumed. Lighting.—The main shaft, stations, and principal tunnelsare lighted with electric incandescent 32 CP. lamps. Thewiring for the mine lighting is carried down the shaft in aniron conduit with iron junction boxes at each station. Thewiring is so arranged that the lamps can also be used for flashsignals if needed. Telephones.—There is telephonic communication betweenall the principal mine buildings, and also between the lowermine workings and the shaft house. The system is so arrangedthat no central exchange is needed. The diagram attachedgives the system of wiring for the surface. Electric gongs are used for station signals but pull bellsare used to move the skips. SuBFACE Survey Work.—Except where very accurate workis required, the location of all mine buildings is done by the stations are set at convenient intervals in t

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