7SWhere no application under paragraph 6 in respect of a mining site has been served on the planning authority by the first review date, or by such later date as may at any time be agreed upon in writing between the applicant and the authority, each mineral permission—
(a)relating to the site, and
(b)identified in the notice served in relation to the site under paragraph 4,
shall cease to have effect, except in so far as it imposes any restoration or aftercare condition, on the day following the first review date or, as the case may be, such later agreed date.