Mining Operations

Backbreak is the unintended fracturing or damage to the rock mass behind the final row of drill holes after a ...Read more

  Endbreak off the end of a shot usually results from one of two reasons. The local geologic structure can promote ...Read more

In order to control fragmentation, two important principles must be correctly applied. The proper amount of energy must be applied ...Read more

The suitable drilling technique is selected depending upon the depth and size of the borehole, mineral to be investigated, sampling ...Read more

In terms of both equipment and sampling, RC drilling is different from diamond core drilling. The major difference being the ...Read more

In order to develop regional scale geological maps for use in small-scale survey, scheduling ground activity for large-scale surveying and ...Read more

Normally, core is extracted inside the barrel by advancing the drill by its rotary action. When the depth of drilling ...Read more

The MT technique is a development of the telluric method which exploits certain natural earth currents (telluric currents) that propagate ...Read more

This article was originally published by the U.S. Department of Transportation. Cap sensitive explosives, such as dynamite, are initiated by detonating ...Read more