Mining and Engineering World . 301-329 North Avenue Nineteen The advertiser wants to know where you saw the advertisement. 24 THE MINING WORLD TAYLORS SPIRAL RIVETED PIPE For HydrauIic=Mining and Water = Supply«Lines Easy to transport and install. Connections with our forged steel flanges or forged steel bolted jointsare quickly made and are absolutely tight. New valuable 80-page Catalog No. 6-J sent on request. AMERICAN SPIRAL PIPE WORKS Office and Works:CHICAGO. Steel Tanks and Plate Work

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