Misfired hole on surface

(1) A misfired hole on surface shall be clearly marked off for a distance of 8 meters (26.5 feet) around the collar of the hole. (2) No person shall be allowed to return to the location of a blast initiated by safety fuse until a time equal to seven times the number of meters (2 times number of feet) in the longest fuse used has passed, and if a misfire is suspected then no sooner than 30 minutes Re-entry when misfire suspected. (3) Where blasting is initiated electrically and a misfire is suspected, no person shall return to the blast site until 10 minutes from the time the blasting circuit is disconnected and short-circuited. Re-entry to electrical blast area. (4) The manager shall ensure that an underground development heading is not abandoned or work discontinued until the broken material from the last blast has been removed Abandonment after last blast. 130 and the face has been examined for misfires or holes containing