Canadian mining journal July-December 1915 . e operation tin a ) ft. level ha*been in line for wvenil months ami luw Kvrn excellentresult*. It in equipped with one M il. Ins Motor Mid 63A-4 K< (VIIm together with one extra battery. Cutting Tramming Costs with a JEFFREY STORAGE BATTERYLOCOMOTIVE at the Portland Gold MiningCo., Victor. Colo. Locomotive* of thin type are particularly useful in hand-ling loads through unfinished parts of tunnels wheretrolley win* arc not Installed. They also nave the laborami material runt* ( bonding rails, trolley wires, feeders,simple to operate, l
Canadian mining journal July-December 1915 . e operation tin a ) ft. level ha*been in line for wvenil months ami luw Kvrn excellentresult*. It in equipped with one M il. Ins Motor Mid 63A-4 K< (VIIm together with one extra battery. Cutting Tramming Costs with a JEFFREY STORAGE BATTERYLOCOMOTIVE at the Portland Gold MiningCo., Victor. Colo. Locomotive* of thin type are particularly useful in hand-ling loads through unfinished parts of tunnels wheretrolley win* arc not Installed. They also nave the laborami material runt* ( bonding rails, trolley wires, feeders,simple to operate, low in i oh! of maintenance, J KFFIiKY , ; OM< • II V I S are l»-inj( installed in numerous Coil ami Metal Mine-It will pay yon to in ventilate. Write iih fully nlxnit your conditions ami ask for latent catalog ami bulletins. JEFFREY MANUFACTURING CO., Canadian Branch & Warorooms. MONTREAL When Answering Adtrrtuninrnt* please mrntion The Canadian Misino Journal. 16 THE CANADIAN MINING JOURNAL. COVERSTHE CONTINENT EVERY product sold under this emblem is backedby J-M Responsibility—a new order of Servicepledged by a nation-wide organization that hashad over half a century of experience in solving yourproblems. J-M Products are made not merely to sell but to givesatisfaction in use. Hundreds of J-M Service Repre-sentatives everywhere give this assurance. Thats J-MResponsibility. J-M Asbestos R oofin^s put an end to your Roofing Expense. These roofings are non-corrosive as wellas weather-proof and time-proof and willlast for a generation. Some in use for twenty to thirty years—and still good ! Contain no organic material—made onlyof Asbestos Fibre and Trinidad Lake As-phalt. Never needs painting. Are fire re-tardant, almost to a fire-proof degree, andnon-conducting. Furnished in Built-up type for fiatroofs and in Prepared type for slopingroofs. J-M Asbestos Built-up Roofing has asmooth surface an<l is very much lighterthan tar-and-eravel.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
