The tag board records all personnel in an active mining area.

The tag board is used to confirm mine evacuations and blasting clearances.

Tamping is the act of ramming the loaded column with a wooden or plastic tamping stick. This has the effect of increasing the diameter of packaged explosives and the amount of explosives that can be fitted into the blast hole.

Note that any packaged explosives containing a detonator (the primer) must not be tamped

The act of consolidating stemming material or pressing explosive cartridge in a drill hole.

Moving in a straight line, away from a curve.

The technical data sheet (TDS) for an explosive typically contains information about the following:

• Description: Physical description of the product, including dimensions and mass where applicable.
• Safety and Sensitivity: Guidelines for storage, handling and use.
• Application and Compatibility: What they are designed to do and what other systems and products are suitable for use with the product.
• Recommendations for use: How the product should be loaded and fired.
• Packaging: Case counts, box sizes etc.
• Storage Requirements: Magazine, shelf life.

Note for health and safety information the Material Safety Data Sheet provides comprehensive information.

Throw or heave is the amount of projection or movement of the rock mass from in-situ to final position.

ThrowMAX is a Heavy ANFO supplied by Downer Blasting Services.

A preformatted risk identification card completed at the start of an activity.
The card generally contains a generic series of questions about the commonly present risks such as, Can I fall?

A common example of this is the 'Take 5' system.

The resistance of explosives to temperature effects depends on the type of explosive, the temperature the explosive is exposed to and the amount of time.

Timing contour plots or relief maps are used to analyse timing for a blast.

The plots show equal firing times at specific intervals.

The spacing between contours is an indication of relief.

Relief is calculated in terms of milliseconds per meter (ms/m)

For example where the 100ms and 200ms contour lines are 8 meters apart the relief is 100/8 = 12.5 milliseconds per meter.

Where contours are close together timing is slower with increased relief.

Note that direction of movement of the fired material is generally at right angles to the contours.