Seems like this would be a good topic for one of our resident geologists...

PAGING: Dave in El Dorado

Dave in El Dorado, please pick up the white courtesty phone in the main lobby....

Ego, try to get Dave's (DIED) input. He's into soils and rocks and stuff (but not in a wierd way mind you). \:\)

JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)