Regulation 15 Certificates of exemption
Subject to paragraph (2) the Executive may, by a certificate in writing, exempt from all or any requirements or prohibitions imposed by these Regulations, any mine, or part of a mine or class of mines and any such exemption may be granted subject to conditions and to a limit of time and may be revoked by a certificate in writing at any time.
The Executive shall not grant any such exemption unless, having regard to the circumstances of the case, and in particular to–
the conditions, if any, which it proposes to attach to the exemption; and
any other requirements imposed by or under any enactment which apply to the case,
it is satisfied that the health and safety of persons who are likely to be affected by the exemption will not be prejudiced.