Non-impairment of Existing Mining/Quarrying Rights.
Section 112
SEC. 112. Non-impairment of Existing Mining/Quarrying Rights. - All valid and existing mining lease contracts, permits/licenses, leases pending renewal, mineral production-sharing agreements granted under Executive Order No. 279, at the date of effectivity of this Act, shall remain valid, shall not be impaired, and shall be recognized by the Government: Provided, That the provisions of Chapter XIV on government share in mineral production-sharing agreement and of Chapter XVI on incentives of this Act shall immediately govern and apply to a mining lessee or contractor unless the mining lessee or contractor indicates his intention to the secretary, in writing, not to avail of said provisions: Provided, further, That no renewal of mining lease contracts shall be made after the expiration of its term: Provided, finally, That such leases, production-sharing agreements, financial or technical assistance agreements shall comply with the applicable provisions of this Act and its implementing rules and regulations.