. Electric railway journal . The labor cost is only 1/3 that of hand tamping. As yet the com-pany (Denver Tramway Co.) hasnt gone into relative costs whenthe overhead investment is taken into consideration. However, thelabor cost is $ per day for the machines: for the same amountof tamping by hand it would be $, so the overhead will notbesin to balance it. Imperial Tamping means more and betterwork with less labor and at less cost. Ask for a copy ofBulletin 9023 INGERSOLL-RANDCOMPANY 11 Broadway, New York165 0- Victoria St., London Offices the world over

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