Assertion: pit | /r/HasProperty | developed
Facets:
value: fully
type: DEGREE
value: small shut-down expense
type: MANNER
Source sentences:
text: Among the advantages of open-pit mining are its flexibility, the ability to obtain mass production with it, and the ease with which rate of production can be increased or decreased once the pit has been developed fully; small shut-down expense; the ability to mine selectively to meet requirements for certain grades of ore (except in glory-hole or milling pits); complete extraction of the ore inside the pit limits (except as limited by ore benches for haulage tracks and maintenance of safe pit slopes, but this ore can usually be recovered finally by employing special clean-up methods); comparatively small number of men employed, a large proportion of whom are skilled labor in mechanized operations; and elimination of hazards inherent in underground mining operations.