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This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ]+++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Mining Library ...: Trumbull, L.W. A Manual Of Underground Surveying. [c1910; Volume 7 Of Mining Library McGraw, 1910 Technology & Engineering; Mining; Technology & Engineering / Mining

"Teachers' bulletin", vol. 4- issued as part of v. 23, no. 9-

For centuries, men dreamed of cutting a canal across the Florida peninsula. Intended to reduce shipping times, it was championed in the early twentieth century as a way to make the mostly rural state a center of national commerce and trade. Rejected by the Army Corps of Engineers as "not worthy," the project received continued support from Florida legislators. Federal funding was eventually allocated and work began in the 1930s, but the canal quickly became a lightning rod for controversy. Steven Noll and David Tegeder trace the twists and turns of the project through the years, drawing on a wealth of archival and primary sources. Far from being a simplistic morality tale of good environmentalists versus evil canal developers, the story of the Cross Florida Barge Canal is a complex one of competing interests amid the changing political landscape of modern Florida. Thanks to the unprecedented success of environmental citizen activists, construction was halted in 1971, though it took another twenty years for the project to be canceled. Though the land intended for the canal was deeded to the state and converted into the Cross Florida Greenway, certain aspects of the dispute--including the fate of Rodman Reservoir--have yet to be resolved.

Lupton's textbook on mine surveying includes the more advanced subjects of trigonometrical plotting, hypsometry, method of finding the true north, metalliferous mine surveying, and photographic surveying.