A treatise on levelling, topography, and higher surveying (1876)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, b. 1840, ed · New York, D. Appleton and company · leaf 132
shaft to which theworkings are to be directed. Find the latitude and departure of A Z.Then the difference between the algebraicsum of the latitudes of the undergroundcourses already run, and the latitude of A Z,is the latitude of the required course ; andthe difference between the algebraic sum… … (184.) Problems. Most of the problems which arise inMining Surveying can be solved by an application of the fa-miliar principles of geometry and trigonometry. 1. Given, the angle which a vein makes with the horizon, 8 shaft at D will be required to Fig. 148. A 114 LEVELLING, TOPOGRAPHY, AND HIGHER…
Surveying
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