#1036
"From a series at Lock Ridge Furnace in Alburtis, Pennsylvania USA. The hot blast iron furnace operated from the late 1860s until 1921. The series may be seen at http://www.pbase.com/dw_thomas/wppd2013. 45 sec exposure on Arista.EDU Ultra Grade #2 RC paper, developed in Dektol 1+7, scanned."
"Self-designed and constructed to use standard 8x10 filmholders. Film plane to pinhole is 153 mm (6 in). Pinhole, made by dimple and sand in 0.001 inch brass shim stock, is 0.56 mm (0.022 in). More than you probably want to know may be seen at http://www.pbase.com/dw_thomas/pinhole_8x10."
