Question

what is teh difference between high-grade ore and low-grade ore?

Answer 1

Answer:

An ore is rock that contains a large enough concentration of a particular mineral—often a metal—to make it profitable for mining and processing. ... High-grade ore contains a large concentration of the desired mineral. Low-grade ore has a smaller concentration

Explanation:

In mining, high grading refers to mining out the portions of the orebody that has the highest grade of material to be mined. However, it may also refer to the concealment and theft of valuable gold or silver ore by miners for personal profit.(no need to write)