Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Donald Brisebois0
Date of Patent
March 1, 2011
0Patent Application Number
126975210
Date Filed
February 1, 2010
0Patent Primary Examiner
Patent abstract
A process for extracting ore from a vein (10) comprises drilling spaced-apart boreholes (16) directly in the vein (10). The boreholes (16) are enlarged using thermal fragmentation generally up to the boundaries between the vein and surrounding waste. A blasthole (18) is then drilled in the vein between the thermally enlarged boreholes (17) for placement of explosive. The explosive is fired to break the ore between the enlarged boreholes (17). The enlarged boreholes (17) act as weakening regions to direct the blasting effect and minimize dilution.
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