[D9211AGH], Letter from Alfred Ord Tate to New Jersey and Pennsylvania Concentrating Works, October 22nd, 1892
https://edisondigital.rutgers.edu/document/D9211AGH
Transcription
Oct. 22, 1892. N. J. & Penn’s. Concentrating Works, Edison, N. J. Dear Sirs:- Referring to the Test Report of October 11th, the average of concentrates during the night run, as given thereon, it 41.48. According to our figuring this is erroneous and should be 42.64. I notify you of this error by direction of Mr. Edison, who wishes more care exercised in the figuring of these percentages, so that he may receive accurate reports. The averages on Test Reports October 18th and 20th also appear be figured incorrectly. Yours truly, Private Secretary.