A blast hole which contains no detectable water.

The operation of a pump when there is no flow due to its inlet being closed, blocked or empty, or any other physical condition where the material being pumped is prevented from flowing into the pump.

Airborne particulate matter ranging in diameter from 10 to 50 microns.

Water that is in motion (i.e. flowing water).

A blast hole may be considered to contain dynamic water where the recharge rate is more than 1 m per hour.
Holes containing dynamic water cannot be dewatered and should be loaded with a pumped, water resistant product.