when hematite pig-iron was used, or £10 per ton when Swedish charcoal pig-iron was employed: my remuneration being a royalty of £2 per ton on all metal converted, the same as charged to all private manufacturers.
when hematite pig-iron was used, or £10 per ton when Swedish charcoal pig-iron was employed: my remuneration being a royalty of £2 per ton on all metal converted, the same as charged to all private manufacturers.