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MINING-HISTORY October 2006
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Subject:
Re: miners and 1851 census
From:
Rob Ixer <[log in to unmask]>
Reply-To:
The mining-history list.
Date:
Sat, 14 Oct 2006 08:45:23 +0100
Content-Type:
text/plain
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text/plain (4 lines)
I thought the barytes in drilling mud was to increase the density of the mud so that the rock chippings would float to the surface -so that the strat. of the drill could be discovered- rather than being a lubricant.
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