Canadian mining journal July-December 1915 . THIS EMBLEM of J-M Responsibility represents aprinciple and symbolizes a pledge:the principle that every J-M Product shall render FullService to its purchaser— a pledge that this principle shall be given force and effectthrough J-M Service that covers the continent. COVERSTHE CONTINENT J-M Asbesto-Metallic Brake Blocks— for the Safety First Mine Hoist A brake shoe has always been looked upon as something that rapidly wearsout. Brake shoe renewals, therefore, have been a necessary we say that there is a material the wear of which is almost


Canadian mining journal July-December 1915 . THIS EMBLEM of J-M Responsibility represents aprinciple and symbolizes a pledge:the principle that every J-M Product shall render FullService to its purchaser— a pledge that this principle shall be given force and effectthrough J-M Service that covers the continent. COVERSTHE CONTINENT J-M Asbesto-Metallic Brake Blocks— for the Safety First Mine Hoist A brake shoe has always been looked upon as something that rapidly wearsout. Brake shoe renewals, therefore, have been a necessary we say that there is a material the wear of which is almost impercep-tible as compared to other materials, we realize that we are making a boldstatement. But its true. And this isnt all. This material has a high coefficient of friction and thatits gripping power is not impaired by oil, water or temperature. It wontburn or even char, and it wont crush or split. Brakes equipped with J-M Asbesto Metallic Brake Blocks respond sympa-thetically to control without slip or jerk. They positively eliminat


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou