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Monday, October 13, 2008 9:21PM IDLE (GMT +12hrs)
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08 August 2008
Online Professional Development, Continuing Education and Technical Reference for Mining
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Professional Development Short Courses for 2008 ...
The Mining Studies Institute at the University of British Columbia and EduMine bring you a program of 27 short courses on mining topics presented in Vancouver. Courses qualify for the UBC Certificate in Mining Studies. All courses are presented in downtown Vancouver ... more »)
A Mining Rule of Thumb (from McIntosh Engineering)
Mining Field: Explosives and Drilling Area: Blasting Strength (Rule#429)
Blasting strength is a direct function of density, other things being equal. Typical explosives for dry ground (ANFO) may have a blasthole density (specific gravity) of 0.8 to 1.3, while for wet ground (slurry or emulsion) it varies from 1.1 to 1.3. Developments in explosive technology make it possible to choose any density desired, within the given ranges. more »
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