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Nighthawk Shaft  



 Development of this mine largely occurred after the Nighthawk Leasing Company was formed on March 27, 1917. This company soon sank the 1 1/2 shaft to a depth of 380ft.* Early work, focused on the upper levels, due to the fact that is where the nearby White Tailed Deer mine had been successful. During 1919, work was mainly on the 450 level, but in March of 1920 the shaft was sunk from the 650 level to the 750 level. At this time the 650 level was the major ore producing level. The ores were generally oxides and in September a large orebody of azurite was hit 250ft. east of the shaft on the 650 level. In May of 1921, an orebody of sulphide ore was struck on the Boras Leasing Company and Nighthawk Leasing Company sideline. The orebody was unexpectedly struck while the Nighthawk Company was sinking a winze on the 650 level to connect to the Boras 700 level for ventilation and as an escapeway. Mining continued until around 1930 and produced ore. During the mid-1930s the mine was reactivated, but was unsuccessful and the mine was finally closed around 1938. In the early 1990’s the shaft was open, but raw (timber had fallen out) with the remains of a collapsed wooden headframe on the dump. Some azurite of light color could be found on the dump.

Drawing of the Nighthawk Shaft  Bisbee Az

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