Glossary

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
A |
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Authority Holder | ||
Authorized PersonThe person authorized by the regulatory authority having jurisdiction, or authorized by management to carry out a particular duty. | ||
AxiallyIn a direction away from a centre point. | |
B |
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Back BreakGround broken beyond the design line of blast holes most recently detonated.
Overbreak on the right wall of a large underground excavation. | ||
Backfill SheetBackfill sheets are provided to charging operations to enable over length holes to be brough back into tolerance with the design charge depth. A complete backfill sheet contains the following information:
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Ballistic DiskBallistic Discs provide a safe and effective way of remotely clearing hang ups and upstanding rill in draw points and stopes. When detonated a ballistic disc produces a large steel slug that is propelled at hypersonic velocity (2000-2600 m/s). The kinetic energy transferred on impact, up to 60 MegaJoules with the BD514, shatters the target area. As accurate aiming is paramount, provision for
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Bell WireInsulated wires (usually of a lighter gauge than the firing cables) used between the detonator lead wires and the firing cables or for lengthening the lead wire of an electric detonator. | ||
Bench Terms
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Bi-directional booster | |






