Geophysical Observatory Mine

Address1 mile west of Bergen Park
QuadEvergreen, 1965 (1979)
SectionS13, T4S, R71W
SourceOperator's Annual Report 1963, Colorado Bureau of Mines
Initialdate1998-10-28 00:00:00-07
Latestdate2012-12-03 00:00:00-07
HistoryIn 1963, owned by Colorado School of Mines. It has a total of 240 feet running due north of four feet six inches by seven feet six inches tunnel with a side drift running due east 110 feet of three feet six inches by five feet six inches for an extensometer station. An instrument area or room is located between the 100 foot and the 130 foot stations of the main tunnel and is ten feet six inches by 30 feet by seven feet six inches high. The Hardrock Contracting company is made up of students from the School of Mines. The rock is drilled with a jack leg, blasted and mucked or removed with a slusher. The tunnel will be concreted when completed.