15. The operator shall ensure that—
(a)adequate means of escape and rescue are provided and maintained so as to permit persons in the quarry to leave the quarry promptly and safely in the event of danger;
(b)adequate means of communication and warning are provided to enable assistance, escape and rescue operations to be launched at once when required;
(c)written instructions concerning the use of emergency equipment and the action to be taken in the event of an emergency at or near the quarry are prepared;
(d)persons at work at the quarry are trained in appropriate action to be taken in the event of an emergency; and
(e)rescue equipment is provided at readily accessible, appropriately sited and clearly sign-posted places and kept ready for use.