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Ballast.

To: BRHSlist@egroups.com
Subject: Ballast.
From: "Paul Evans" <peke@o...>
Date: Sun, 14 Jan 2001 12:16:23 -0000
User-agent: eGroups-EW/0.82
I have checked back to message 6000 and no data.

What mineral did was used as ballast fro the tracks in Colorado and 
where was it mined.

Paul Evans


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