Monday 4 March 2013

Shoad & Float Ores, and Subsequent Hushing

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Prospecting for galena in the Durham Dales

scroll through the following document for an insight into early
lead production in the dales of the North Pennines orefield

Forster also makes this interesting observation -

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Unrelated to this post, below is an example of
eclectic science esoterica 

liquid helium

New Scientist 20 Jun 1963

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