The Delaware Fissure Mine was worked by the Delaware Mining Company (an offshoot of the Pennsylvania Mining Company) between 1864 and 1880. The mine worked the Delaware Fissure, which consisted of one vein that showed copper mixed in a coarse calcite and fine prehnite matrix. In 1876, the two companies merged to form one company, the Delaware Copper Mining Company. Work continued until 1881 when the Conglomerate Mining Company was organized and absorbed the Delaware, continuing work till 1884. In the years it operated3.., the mine produced very minor amounts of copper, which is noticed today as very little copper is found in the pile.
Three shaft houses fed to one central rock house containing 3 crushers. Engine house on side of rock house and boiler house next to it. Boiler house contained 2 boilers, and a 15’ stone stack base which supported a 40’ iron stack.
Cache is standard blue top peanut butter jar and is set next to the boiler house foundation near the smoke stack base. The central rock house was located to the north where the road is now.