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a. A shaft, cavity, or other part of a mine from which ore is being or has
been extracted; a working, as a labor in a quicksilver mine.
See also: workingb. The annual assessment work required on claims calls for $100.00 of
labor and improvements. In Australia, claims have continuous labor or are
manned throughout the year. von Bernewitz
c. A Spanish term used in early land surveys in Texas for unit of area
equal to about 177.14 acres (representing a tract 100 varas square).
Pronounced la-bore. AGI
Source:
Dictionary of Mining, Mineral, and Related Terms
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