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Re: Dark Substrate, Estes gravel

 Dave, he must have used anthracite...wouldn't bituminous
> coal tend to float? Maybe not....

Errrrrm. Black, shiny. Looks like carbon. Sinks in water. B-----d if I
know. I'm a crap fishkeeper, not a geologist.
Dave Wood
----- Original Message -----
From: "William Ruyle" <forest at copper_net>
To: <killietalk at aka_org>
Sent: Monday, July 15, 2002 6:52 PM
Subject: Re: Dark Substrate, Estes gravel

> forest at copper_net

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