Naska Mining Co. acquired mineral rights for $14,433,000. The mineral deposit is estimated at 84,900,000 tons. During the current yeaf, 12,750,000 tons were mined and sold. a. Determine the amount of depletion expense for the current year, Round the depletion rate to two decimal places. Fetolace Theac. My Work Simitar to the units-of-production method to depreclate a fixed asset, the depletion rate that is calculated stays constant no matter how much of the natural resource is extracted