The Theory And Practice of Surveying: Designed for the Use of Surveyors And Engineers Generally

Cover The Theory And Practice of Surveying: Designed for the Use of Surveyors And Engineers Generally
The Theory And Practice of Surveying: Designed for the Use of Surveyors And Engineers Generally
Johnson, J. B. (John Butler), 1850-1902
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c/iJtfr. Applied to a passage having a more or less fixed inclination from the horizontal ■ a slope.
*v^I. One of a number of horizontal passages along, or parallel to, the deposit, and placed at more or less fixed intervals, generally loo ft,^ for the systematic working of the mine.
am^^/f, A small passage from a i^vei into s topes or to the ne3Et laurel above.
iii-hi^le. A passage left from stapt to level for dropping down ore or rock.
ttcrof*. That portion of the vein intersectinjj the surfa
...ce, aft, A hole sunk more or leas vertically downward.
s»/>^. The workings above or below the levels where the mass of the ore-body is broken.
rike. The direction taken by the intersection of the vein with a hori- zontal plane.
uih. Cross-timbers between the walls of the excavation.
mp. An opening at bottom of shaft or at any level for the collection of water.
iftnei. A horizontal passage from the surface; properly speaking it should be open at both ends, but it is not always so used in mining, Vj*^/, a shaft sunk from a level.


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