The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 382
t, run-ning S. 240 15 W., 102 ft. Sta. 9 at 6th level in shaft. breast of 6th level, running N.E. breast of 6th level, runningS.W. Sta. 10 at 7th level in shaft. breast of 7th level, running N.E. breast of 7th level, runningS.W. Sta. 11 at 8th level, at bot-tom of shaft. breast of 8th level,… … LONGITUDINALSECTION transversesection Fig. 100. run about 2 ft. from the north end of the shaft. In the levels the line of surveywas to the centre of the breast.23 354 SURVEYING. Fig. 101 shows the plan, and Fig. ioo the longitudinal and transverse sec-tions of the mine as plotted from the…
Surveying
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