Gerald Miller wrote:
On Mon, 17 Mar 2008 18:22:48 GMT, Eregon wrote:


Lew Hartswick wrote in
:


Slate : Metamorphosed shale. ie. clay just how hot would it
have to be to be ignited? Wonder what is flamable in a
slate mine?

Methane gas.

Oil shale?
Gerry :-)}
London, Canada
I wonder how the chalk would write on any slate that was
metamorphosed from Oil shale? :-)
...lew...