[LB056104], Letter from Thomas Alva Edison, Alfred Ord Tate to Owen J Conley, New Jersey and Pennsylvania Concentrating Works, March 17th, 1892
https://edisondigital.rutgers.edu/document/LB056104
Transcription
March 17, 1892. Mr. O. J. Conley, N. J. & Penn’a. Concentrating Works, Ogdensburgh, N. J. Dear Sir:- I beg to confirm the following message which was telephoned to you to-day by direction of Mr. Edison: “Ask the Chemist this: Supposing you have a seventy per cent ore and the remaining gangue is half quartz and half silicate of alumina, and you used coke with flux for ash, how much, if any, lime or other material would you use per ton to act as a blanket to prevent oxidation, or would it be impossible to use so pure an ore without mixing with other ores? I am supposing of course our ore is bricked. What I want it to ascertain how much fluxing matter over and above that to flux the ash of the coke it is necessary to use on a seventy per cent bricked Ogden ore. Edison.” Yours very truly, A. O. Tate Private Sec’y. M.