Gary, that is a quite beautiful skillet!! I've only seen one or two similar, in pictures here on the WAGS forum. VERY nice!!
Perry, as I understand it, many of the early foundries went under after they had depleted the local fuel, limestone or iron sources. Many of the east coast iron deposits were small and of poor quality ore, and the early furnaces were fueled by wood charcoal. I've read reports of Pennsylvania foundries that failed after they had cut down and burned all the trees for miles. After the canals were completed in the early 1800's, coal became available as a cheaper and more reliable fuel source, so foundries along waterways that could handle the coal barges were the ones that stuck around longest.