46th Annual Conference

Sessions Speakers Exhibitors Floor Plan Buzz

Subdrill - The Underutilized Blasting Parameter (Room Capitol Ballroom 5-7; Fourth Floor)

28 Jan 20
2:30 PM - 3:00 PM

Tracks: Session 11 - Problems and Solutions

Speaker(s): Stephen Mansfield
In open cut metalliferous blasting, the use of subdrill has primarily been limited to achieve excavation down to the target floor elevation. A new method for evaluating and determining subdrill, and its impact on powder factor and run of mine fragmentation in open cut blasts is presented.