Relief shown by hachures. Depicts mineral deposits and veins on the company estate. The Fisher Hill and Millis Hill mines are marked prominently. From Halsey Mining Report (1860): "For the sake of greater correctness, all the angles for the instrumental survey were taken by a theodolite... On examining the map, you will notice that there are no less than fifteen genuine veins on the property. They are marked by red lines and numbered, for the sake of more conveniently referring to them in the report. They are genuine and permanent veins, following regular lines of strike and dip..."
Related Item
The Halsey Mining Company. Prospectus, mineralogical and geological report, and map. New York: Pudney & Russell, Printers, 1860.
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