Contractors' and Dealers' Association of California · San Francisco : L. A. Larson · leaf 500
15 Cents Per Copy Phone Dougliis 2372 r.n/i^,T^T ZT , SAN FRANCISCO, CALIF., APRIL 14, 1923 Published lEvery SaturdayTivi-nty-tliiril Year .No. 15 ermanence Schumacher. Office 210 American National Bank Building cionont 0 \y Wall Warehouses San Francisco Oakland Comfi earance … )i^y*^^-.. ^^ :ti^¥ •3&1 Remixes Concrete When materials have passed through mixing processonce, and come to discharging side of the drum,the reversed discharge chute sprays them back tothe charging side for repeated trips through the 5-action, remixing process. This sprajing-showeringaction,…
Architecture · Building · Construction industry · Engineering
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