Hi John,
Indurated means hardened or consolidated by heat and pressure. The term
seems to have been adapted from geology to describe industrial processes.
In geological terms, coal is indurated vegetation.
I assume the company was using an early process for briquetting slack in
moulds under pressure. I haven't seen any references to briquetting coal
earlier than about 1870.
(Just back from holidays - I'll reply to your earlier message shortly.)
Regards, Peter Bell
On 13/1/07 4:32 PM, "John Shoebridge" <[log in to unmask]> wrote:
> Hi Group
>
> I am researching "The Indurated Patent Fuel Coy " here in Newcastle NSW in the
> 1870's.
>
> Am I correct in assuming that Patent Fuel was coaldust mixed with tar etc as
> briquettes ?.. Where does the "Indurated" come into it ?
>
> Regards
> John
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