Tom G. mentioned this to me the last time we were out in the woods, but apparently someone in Japan has done research and written a paper on early American industry in the Pines, and specifically Martha's Furnace.
http://wwwsoc.nii.ac.jp/jaas/periodicals/JJAS/PDF/2004/No.15-097.pdf
Thanks to Tom for letting me know about this.
http://wwwsoc.nii.ac.jp/jaas/periodicals/JJAS/PDF/2004/No.15-097.pdf
Thanks to Tom for letting me know about this.