Waste rock

Waste rock is barren or marginal ore that has been mined, but which has so little value that it is not worthwhile to engage in additional treatment, so it is discarded. Waste rock is usually removed in order to gain access to a commercially-producible mineral deposit. If so, the cost should be capitalized along with other development costs and then amortized over the life of the mine. If the removed waste rock does not provide access to a commercially-producible mineral deposit, then the related cost should be charged to expense as incurred.

Related Courses

Accounting for Mining