Thomas was sent to Scotland to examine Neilson 's installation and reproduced it at Yniscedwyn .
George Crane , owner , and David Thomas , superintendent of the Yniscedwyn Iron Works , had themselves conceived of the idea of using hot blast to smelt anthracite .
superintendent was sent to Scotland to examine Neilson 's installation and reproduced it at Yniscedwyn .
George Crane , owner , and David Thomas , superintendent of the Yniscedwyn Iron Works , had themselves conceived of the idea of using hot blast to smelt anthracite .