[LB035223], Letter from Alfred Ord Tate to Archibald Blue, Ontario Mining Commission, December 21st, 1889
https://edisondigital.rutgers.edu/document/LB035223
Transcription
Dec. 21, 89 A. Blue, Esq., Secretary Ontario Mining Commission, Dept of Agriculture, TORONTO, Canada Dear Sir:- Mr. Edison has received your letter of 11th instant, in regard to his Ore Milling process, and asks me to inform you that we have a mill in Pennsylvania which has been running for several months. The concentrates are sold to local furnaces, which use 25% of these fine concentrates which are ground to 10 mesh, with 75% of regular large ore. Mr. Edison's latest machine, particulars in regard to which he is not quite prepared to publish, is designed specially for finely crystallized ore. Yours truly, A.O. Tate Private Secretary