7.—Forfeiture.

If at any time the requisite number of holders of miners rights shall not be employed or occupied upon any such "Extended Claim," page 19 the Warden may, upon proof thereof being produced before him, in the presence of all parties interested, cancel the certificate of Registration, either in the whole or in part, as may be equitable; provided always that a monetary penalty may be imposed in lieu of forfeiture, as hereafter set forth in Section 6 of Regulation XV.