A MANUAL OF UNDERGROUND SURVEYING

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A MANUAL OF UNDERGROUND SURVEYING

Author: LOYAL WINGATE TRUMBULL | Size: 7.9 MB | Format: PDF | Quality: Original preprint | Publisher: THE McGeAW-HiLL BoOK COMPANY | Year: 1910 | pages: 304

Surveying is the art of making measurements which determine the relative position of two or more points. Mine surveying is the art of surveying underground openings, i. e., finding the relative positions of points under the surface, or the position of points underground relative to points upon the surface. The angles and distances measured are usually drawn to scale upon various planes and mine maps thus produced.

In mine surveying there are but few operations different from those of plane surveying. The application of the same principles to the different conditions, along with a greater degree of accuracy, insures success underground.

T. A. 'Donahue, in 'Colliery Surveying,' says: 'Surveying is the art of taking such measurements and observations of an object as will enable a true proportionate representation to be drawn on a plane surface. The principles upon which it depends are all embodied in the science of geometry; so that surveying may be said to be a practical application of geometry.'

Johnson, in his 'Theory and Practice of Surveying,' p. 431, says: 'Surveying is an art, not an exact science.' This should be kept constantly in mind, and in every case that method which promises the minimum deviation from the scientifically correct result should be employed.

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