7.—(1) No person shall take any detonator below ground in a mine except in a securely locked detonator case provided by the owner of the mine:
(2) No person shall put a detonator into a detonator case if it would then contain a delay detonator as well as a detonator which is not a delay detonator.
(3) No person shall put a delay detonator into a detonator case unless the detonator is clearly marked with a number which indicates the period of delay.
(4) The manager of every mine in which detonators are used shall ensure that no detonator case is issued for use in the mine unless it is so constructed and maintained that when the case is closed it is impossible for any detonator or the leads of any detonator contained in the case to touch any metal part thereof which is exposed outside the case or is in contact with any other metal part so exposed.
8.—(1) Any shot firer to whom a detonator case has been issued shall—
(a)retain the key of the case in his own possession throughout the period during which he is on duty;
(b)ensure that, apart from any check sheet for recording shots fired by him, nothing except detonators is in it;
(c)ensure that at any time at which it is not on his person it is in a safe place and, unless he remains in the immediate vicinity, in a securely locked box; and
(d)if at the end of his period of duty it contains any detonator, return it to the appropriate place on the surface appointed for the storage or deposit of explosives.
(2) No shot firer shall remove a detonator from a detonator case unless it is required immediately for charging a shot hole.