David,
If you look the transport infra-structure and the cost of transport, much of
the devlopment will make a lot more sense. Coal could easily double in price
if it needed carting 10 miles. So early use of coal had to be close to where
it was mined. For higer value minerals, this was less critical.
Malcolm Henry
------------------------------------------------------------
This mail sent through IMP: http://webmail.brad.ac.uk
To report misuse from this email address forward the message
and full headers to [log in to unmask]
------------------------------------------------------------
|