San Francisco : Architect and Engineer, Inc · leaf 543
es 1 1 miles to the edge of the San Joa-quin Valley. The driving of the westerly portion ofthe tunnel was lifted from the usual pros-aic although strenuous level of such workby an exceptionally keen rivalry betweenthe miners employed by a contractor andthose employed by the city under the… … MOCCASIN IdWKK llol M;, I I.IB IkAND CLUlAtiES IHMKAKroN PUE HRincl, AuiEuitr 100 March, 1929 ARCHITECT AND ENGINEER, 101 pedite the tunnel excavation. When thiswork had progressed sufficiently to indi-cate what the underground conditionswould be, bids were called for and con-tracts let for…
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