A mining lease may be revoked if the lessee fails to pay rentals when due or if any of the terms of the lease or of law are not complied with, or if the lessee wholly ceases all mining operations for other than reasons of force majeure or the uneconomic operation of the mining lease for a period of one year without the written consent of the board; provided that the board shall give the lessee notice of any default and the lessee shall have six months or such other time limit as provided by the rules from the date of the notice to remedy the default.