Definitions for "Cut-off grade"
Keywords:  mine, grade, tonne, lowest, royalty
Lowest grade of ore in a deposit that will recover mining costs; the cut-off grade determines the workable tonnage of an ore.
The lowest grade (contains ounces of gold per tonne of ore), specific to a mine, that allows a company to extract metal economically.
the lowest grade of mineralized material considered economic; used in the estimation of mineral reserves in a given deposit. Financial Terms