and engineering journal . SOUTH AFRICANREPRESENTATIVE: E. FRASERJONES. BOX OFFICES:Oceana Buildings,Simmonds Street. PHONES:2596 and 2597. TELEGRAMS: BRITFLOTT. More Engineering Features. Ok South African mining $ engineering 3ournal THE ONLY WEEKLY MINING PAPER IN THE CONTINENT OF AFRICA. established 1891. Vol. XXXII, Part II JOHANNESBURG. TKANSVAAL, SATUEDAY, NOVEMBER 26, 192] No. 1574 The Great Vaal River Barrage: Goliath Crane andSteel Gate assembled in The above picture shows the Goliath crane erected at the Vaal River Barrage: also, assembled in
and engineering journal . SOUTH AFRICANREPRESENTATIVE: E. FRASERJONES. BOX OFFICES:Oceana Buildings,Simmonds Street. PHONES:2596 and 2597. TELEGRAMS: BRITFLOTT. More Engineering Features. Ok South African mining $ engineering 3ournal THE ONLY WEEKLY MINING PAPER IN THE CONTINENT OF AFRICA. established 1891. Vol. XXXII, Part II JOHANNESBURG. TKANSVAAL, SATUEDAY, NOVEMBER 26, 192] No. 1574 The Great Vaal River Barrage: Goliath Crane andSteel Gate assembled in The above picture shows the Goliath crane erected at the Vaal River Barrage: also, assembled in foreground one ofthe great steel gates which, installed between concrete piers, make the barrage. There are 36 of these gates, each 25 feethigh and 32 feet 6* inches wide, weighing 26 tons. With the balance weight, operating gear and other appurtenancesthe total weight for each opening is about 100 tons. Thepressure on each gate is roughly 300 tons when the reservoir is 424 THE MINING AND ENGINEERING JOURNAL. Jburg, November 26, 1921. SIEMENS BROTHERS AND COMPANY, LIMITED. MAGNETO MINING TELEPHONES Hermetically sealedDIAPHRAGM behind extrastrong GRID. Gold platedDIAPHRAGM. Very strong Dampproof CORD.
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
