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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hill; Bruce S.
Address:
Mondeor, ZA
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4123109 Mining method October 31, 1978
A tabular mineral deposit is mined by drilling overlapping holes in the plane of the deposit, the first hole being drilled in any convenient manner and each subsequent hole being drilled by a box hole type machine with a coring bit. The core breaks up and passes out of the core barrel










 
 
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