ironmaster

plural ironmasters

1. A manufacturer of iron

   A contract has just been made by several of our large ironmasters for 8000 tons of iron for the great Menai Straits Bridge, in connection with the Chester and Holyhead Railway.

   1846, editorial staff, “CHEMISTRY”, in Scientific American, series 1, Volume 2, Issue 13, page 102

2. datedThe proprietor of an ironworks

   1 more example

   Thirdly, it incorporated Samuel Homfray, Richard Fothergill, Matthew Monkhouse, William Thompson, and William Forman, ironmasters, (described in the Act as intended lessees of the Tredegar Iron Works) as the Sirhowy Tramroad Company, with powers to make, at their own expense, the portion of the proposed tramroad from Sirhowy Furnaces to Nine Mile Point;

   1939 September, Charles E. Lee, “The Sirhowy Valley and its Railways—I”, in Railway Magazine, page 206