[LB049593], Letter from Eb. Williams Thomas to New Jersey and Pennsylvania Concentrating Works, June 3rd, 1891
https://edisondigital.rutgers.edu/document/LB049593
Transcription
6/3/91. N.J. + PA Conctg Wks. Gentlemen A complete set of coils for one machine will be shipped probably tomorrow. It is expected that these coils will prove more efficient than the old ones and might increase the product 10% in quantity keeping quality as at present. We would suggest that some machine be now selected and make from it separately, tests of ore fed to it, bests of tailings connectors, similar tests be made after new coils have been placed in position. Thomas will be up on Monday next. Yours truly, Edison Laboratory.