Banking SIG?

Jacqui Caren jacqui.caren at
Tue Aug 8 18:08:17 BST 2006

John Costello wrote:
> I'll bite:  How does one measure that density?

You stick them in a press and try and push a diamond into them.
Then you measure the width of the indentation with a microscope.

Opps - sorry thats "hardness" - for density you stick them in a tub of
water and ... - oh that the witch/warlock test...


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