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Scientific American, Vol. 35, No. 14 (1876) (1876)
leaf 8
he Burleigh 1873, work was sus- drill, and 7,000 feet pended for want of by the diamond drill. funds, but at the end That by the Burleigh of the fiscal year, drills was done by June 30, 1874, it was contract at so mucha found that, for the foot; and the diamond four months and a drill, purchased… … nally suggested his © 1876 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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