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Scientific American, Vol. 98, No. 23 (June 1908) (1908)

leaf 5

An illustration from Scientific American, Vol. 98, No. 23 (June 1908), 1908, leaf 5
work, or measuring the light of for the whole canal, of the amount of work completed new canal, to which must be added the prism exca- the stars, has been an important part of the routine vated by the company since the date of that report, since American operations commenced, together with in… … Steam Shovel Equipment.—Thirty-two 95-ton, tent for more than twenty years, and Mr. Rudolph DIAGRAM SHOWING IN BLACK SHADING THE AMOUNT twenty-eight 70-ton, three 45-ton, and one 38-ton steam Hering states that there is. no city in the United OF EXCAVATION COMPLETED BY APBIL, 1908, shovel, or a…

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