; (ii) the lessee shows that the lease cannot be successfully operated at a profit; or (iii) the Secretary determines that issuing such extension is appropriate. (C) Definition of commercial quantities In this paragraph, the term commercial quantities means any economic amount sold, bartered, or traded for profit. (d) Cumulative acreage limitation No person may take, hold, own, or control at 1 time, whether acquired directly from the Secretary under this Act or otherwise, hardrock mining leases or licenses for an aggregate of more than 20,480 acres in any 1 State. (e) Reduction of royalty rate (1) In general Subject to paragraph (2), the Secretary— (A) may reduce the royalty rate for a lease under this section upon a showing by clear and convincing evidence by the operator that production would not occur without the reduction in royalty rate