May be of interest. Document relating to Fuji film and other companies. Historical (1945) technical document describing how Silver Nitrate for photo use was made in Japan. Also manufacture of developing agents Elon and others. Unfortunately nothing of substance on emulsion making. See page 44-47. http://www.fischer-tropsch.org/prim...Reports/USNTMJ-200A-0609-0672 Report A-39.pdf It appears there are some similar US Navy documents, Technical Report 96 and Technical Report 140 that relate to the Agfa Film Company. Anyone have a copy they could post? Emulsion.