While examining a number of leases for forge and furnace in the early 18th
century I have encountered the following clause stipulated by the owner.
 
'175 tuns of well blown pig metall...to be supplied at the end of the lease
at a price of £5 5/- per tunn..if one years notice given that this is required.'
 
Are such clauses common in this type of lease(either in Britain or elsewhere)?
 
And can anyone provide information as to what would be the market price for
a ton of pig iron in 1700, 1710 and 1720 (in pounds shillings and pence please).
 
Many thanks,
 
 
Jeff Morris