Where misfires occur with electric detonators, a waiting period of at least 5 minutes shall elapse before anyone returns to the shot. After such failure, the blasting cable shall be disconnected from the source of power and the battery end short-circuited before electric connections are examined.
225 ILCS 705/20.28
No person shall return to a missed shot, if lighted with fuse, until 8 hours have elapsed from the time of lighting the same
Laws 1953, p. 701.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.