[D9234AAD], Letter from J W Downing to Thomas Alva Edison, January 25th, 1892
https://edisondigital.rutgers.edu/document/D9234AAD
Transcription
Received Feb 1 1892 Woodland Wash Jan 2 1892 Ans’d Feb 12th 1892 Mr. Thomas Edison Dear Sir I am interested in Gold Mining and we have a great deal of Platinum in our sand. What is it worth? And is there any process of separating it from the black sand. If you know of any please let me know by return mail and oblige. Yours with respect J.W. Downing Woodland Washington [TAE Marginalia] platinum ore worth about six dols per oz. You could lift 50 to 75% of + then pan the platinum out supposing of course you are sluring[?} it_E