Regulation 841 amended in gazette 29 feb 2008 p 690

[Regulation 8.41 amended in Gazette 29 Feb 2008 p. 690.]
8.42. Suspension of work following firing
After a charge has been fired in a workplace, a person must not
recommence work in that place until it has been carefully

Mines Safety and Inspection Regulations 1995
Explosives Part 8
General Division 2
r. 8.43
As at 16 Oct 2009 Version 05-a0-00 page 165
Extract from , see that website for further information
inspected for misfires by the shotfirer or another competent
person in accordance with this Division.
Penalty: See regulation 17.1.
[Regulation 8.42 amended in Gazette 29 Feb 2008 p. 690.]
8.43. Misfires
For the purposes of this Division, a misfire occurs, or should be
suspected, if —
(a) when using safety fuse, the number of shots counted is
less than the number of holes or groups of holes fired, or
there is any other reason to suspect that any of the
charges has failed to explode;
(b) any hole or portion of a hole has damaged safety fuse,
detonating fuse, or detonating wires exposed; or
(c) there is any cut-off, butt, or remaining portion of a hole
which is suspected to contain explosive and it has not
been shown that it does not contain explosive.
[Regulation 8.43 amended in Gazette 29 Feb 2008 p. 690.]
8.44. Suspension of work — underground misfires
(1) When a misfire is suspected to have occurred in an underground
mine the person who suspects or confirms the misfire must —
(a) report the misfire to the underground manager, foreman
or supervisor; and
(b) if the misfire occurred at the end of the shift, also report
it to the relieving person.
Penalty: See regulation 17.1.
(2) A person must not do any further drilling in a face until a
misfire has been made safe or refired.
Penalty: See regulation 17.1.

Mines Safety and Inspection Regulations 1995
Part 8 Explosives
Division 2 General
r. 8.45
page 166 Version 05-a0-00 As at 16 Oct 2009
Extract from , see that website for further information
8.45. Suspension of work — misfires in surface mining operations
If a misfire is suspected to have occurred in a surface mining
operation a person must not do any work at the site at which the
misfire occurred until the manager or quarry manager, or a
competent person authorised by the manager or quarry manager,
has inspected that site and taken such action as may be
necessary to ensure that further work may be safely continued.
Penalty: See regulation 17.1.
8.46. Time interval and inspection
(1) A person must not approach a charge that has misfired —
(a) if safety fuse was used, until half an hour has elapsed
since the time of lighting the fuse; or
(b) if electrical firing was used, until the firing cables are
disconnected from the source of electric power and short
circuited and 5 minutes have elapsed.
Penalty: See regulation 17.1.
(2) After the period specified in subregulation (1), the shotfirer,
supervisor, foreman or manager, whichever is applicable, must
inspect, or delegate some other competent person to inspect, the
bench or face and take such action as must be necessary to
ensure that further work can be safely continued.