Of course a magnet would take care of that, handily.

"Larry Gottlieb" wrote in message
om...
william kossack wrote in message
news:rwU5d.125625$D%.85245@attbi_s51...
I have some lapus nugets that I would like to break up and use in a
couple projects.
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I tried the steel pipe approach. Although it crushed the stone, the
small fragments were mixed with steel dust.