Cranege brothers

Thomas and George Cranege developed the use of the reverberatory furnace for the production of wrought iron from cast iron. Their experimentation using coal in 1766 at the Coalbrookdale iron works under the sponsorship of Richard Reynolds was a precursor to the work of Henry Cort, who further refined their techniques, together with those of Peter Onions, leading to his patent of 1784.

External links

• Chapter 5 of INDUSTRIAL BIOGRAPHY; Iron Workers and Tool Makers by Samuel Smiles, from Project Gutenberg