Regulation 25
(1)
Every person who has fired a shell shall—
(a)
ascertain by personal examination whether it is safe for ordinary working to be resumed in each working place affected by that shot; and
(b)
ensure that any necessary action is taken to make each such place safe for such working.
(2)
Where a round of shells has been fired the person firing them shall not make that examination before the expiry of five minutes.