(a) The secretary shall recognize, encourage and permit the adoption and use of alternative or new methods, materials, machinery, equipment, supplies, tools, devices and processes in carrying out the provisions of this act pertaining to electricity in anthracite coal mines when such alternates provide protection to personnel and property equal to or in excess of the requirements set forth in any portion of this act. Any operator proposing use of such alternate or new methods, materials, machinery, equipment, supplies, tools, devices and processes shall notify, in writing, the secretary, describing such proposal in detail.

(b) Upon receipt of this proposal it shall be given preliminary review by the secretary. If such review indicates that the proposal has potential merit, the secretary may, at his discretion, appoint a commission consisting of three mine inspectors and any others he deems pertinent. Such commission shall investigate and review said proposal to determine its effect on safety and property and report their findings in writing to the Secretary of Mines and Mineral Industries.¹

(c) If either the secretary or commission recommends disapproval, their report shall include specific references to the requirements and standards of this act which the proposal violates and shall also specify the manner in which it fails to provide personnel and property protection equal to or in excess of such requirements or standards.

(d) Upon the approval of the commission, the secretary shall forthwith issue a permit approving the alternate or new methods, materials, machinery, equipment, supplies, tools, devices and processes.