San Francisco : Architect and Engineer, Inc · leaf 120
constructed eighteen feetof conduit fifty-two inches in diameter.The best run for one hour was five feeteight inches of finished conduit. Mr.Sheen says his machine can be used iiithe construction of sewer mains, watermains, conduits and tunnels for any pur-pose up to twelve feet in diameter. • What… … We Flat Screen FOR STEEL SASHVENTILATORS CHEAP + DURABLE 4- EFFICIENT Phone for Folder Michel & Pfeffer Tenth and Harrison Sts. JfOtl W^OfkS Phone Market 731 San Francisco, Cal
Architecture · Building
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