Question

Minimum metal percentage at
which mining is profitable is known
as
OA) average grade
O B) cut of grade
C) mill grade
D) economical grade​

Answer 1

Answer:

B) cut of grade

Explanation:

cut of grade is minimum grade required in order for mineral or metal to be

Answer 2

The minimum metal percentage at which mining is profitable is known as cut off grade.

Explanation: The cutoff grade is the minimum grade needed to mine a mineral or metal profitably (or processed). The material found to be of this grade or higher is thought to be ore, whereas the material of this grade or lower is thought to be waste.

It is possible to determine the cutoff grade using a number of methods, each with differing degrees of complexity. Cutoff grades are chosen to accomplish a certain goal, such as resource utilisation or economic gain. Specific objectives, such as the maximum of total earnings, immediate gains, and present value, can be achieved by further subdividing these objectives.

Thus, the correct answer is option B) cut-off grade.

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