[D9235AAE], Letter from R D Casterline to Thomas Alva Edison, March 28th, 1892
https://edisondigital.rutgers.edu/document/D9235AAE
Transcription
Dear Sir:- After inking several trial pits on the hill South of Bethlehem spoken of in my last letter. I find the slight attraction so widely extended over the mountain to be due to the ore carried in the float rock. The bed rock showing scarcely any magnetic and the attraction disappearing as soon as the float has been thrown out. This is the case even where the compass showed 20° attraction. There is from ten to twelve feet of loose rock covering the hill which carried considerable soon. After fixing up a description at Vera Cruz-making some surveys necessary before a description can be made out for Mr. Elliott-I shall investigate some long ranger in the “barrens” of Burkes Co which though reported to contain ore have never been explored much, being away from the R.R. There is a prospect of a R.R. being put through the section and now is the time to secure property there if there is anything worth having. Yours Respectfully R.D. Casterline [TAE Marginalia] You can tell float by raising your compass up higher if deflection rapidly diminishes by height its float. E