The data below represent everything available in the MBMG Abandoned and Inactive Mines (AIM) database.

Sites Table
AIM Id Name Alternate Name District County
BE000509 HENDRICKS / GRAETER / APEX GRAETER TUNNEL/ BANNACK-APEX BANNACK BEAVERHEAD
MRDS AMLI MILS Latitude Longitude Datum
W013429 01-006 300010189 45.1556 -112.9961
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
08S 11W 7 ABCC 5001951 343097 12
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
5840 F DILLON DILLON BANNACK
Property Type Update Date Who Updated
LODE 6/14/1995 CBD
Commodities Table
Commodities Identified
COPPER
GOLD
LEAD
SILVER
Agency Info Table
Information
Agency: BLM
Region District: BUTTE
Ranger District:
Forest Service Tract:
Watershed Code: 10020002
Forest or Resource Area: DILLON
Owner: M
Impact: V
Report: Hendricks Mine BE000509 Most of the Hendricks mine is within Bannack State Park, on the south side of Grasshopper Creek, it is owned by a combination of the Bannack State Park (Montana FWP), private and BLM. It has been extensively studied by Northern Testing (1982), DSL-AMRB (1990) and FWP. The mine is hosted in Mississippian Madison limestone (close to the Amsden contact) and probably not associated with any intrusive (Geach, 1972 and Shenon, 1931). Workings include a lower tunnel called the Graeter Tunnel, Gibson Tunnel, and Stallings Raise; estimates of workings length range from 600' (Gilbert, 1935) to 1550' (Shenon, 1931) to 2700' (Geach, 1972). Mineralogy includes yellow, red and brown iron oxides (gold bearing), garnet, and fault gouge (Geach, 1972). Ore occurs in bedding planes (one at least 8' thick) in six different shoots (Geach, 1972 and Shenon, 1931). Production was 1918 to 1961, mainly from 1919-21 and 1933-41 (Anon., MPF, Room 213); total recorded production was 23,594 tons ore yielding 5,299 oz Au, 4,979 oz Ag, 296 lbs Cu, and 251 lbs Pb. Mills at the site progressed from a 5-stamp mill in 1918, to a ball mill, classifier and two cyanide tanks added in 1919 to a 10-stamp mill in 1920 (ball mill, classifier, two agitators, four thickeners, and six cyanide tanks) to a 50-ton ball mill in 1934. Tailings present total 60,800 cubic yards, ranging from 3' on the edges to 15' thick in the center (Northern Testing). The state DSL-AMRB has rehabilitated the mill, fenced, posted and gated all structures and openings, and has more plans for future work (Dale Herbort, personnal communication, 1994).
Screening Criteria Table
Information
Mill Tailings: Y
Adit Discharge: N
Metal Leaching: Y
Water Erosion: Y
Residence: N
Hazardous Materials: Y
Open Adit: Y
Visit: Y
Comments: STABILIZED BY DSL-AMRB; MT F; W; & P; BANNACK STATE PARK; DSL-AMRB SECURED
Rank Table
Information
Investigator: P. HARGRAVE
Date: 6/1/1994
Photos Available?:
Access: IR
Nearest Wetlands/Bog:
Drainage Basin: GRASSHOPPER CRK
Water Contact Stream:
Nearest Surface Water Intake:
Number of Surface Water Intake(s) observed within 15 miles downstream:
Uses of Surface Water Intake(s) observed within 15 miles downstream:
Nearest Wells (miles):
Number of Wells within 4 miles:
Uses of Wells within 4 miles:
Nearest Dwelling (miles):
Number of Months Occupied:
Number of Houses within 2 miles:
Recreational Usage on Site:
Nearest Recreational Area (miles):
Name or Type of Recreational Area:
Safety Risk from Open Adit/Shaft:
Safety Risk from Highwall or Unstable Slopes:
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Safety Risk from Solid Waste (includes sharp rusted items):
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Sensitive Environments within 2 miles of Site or 15 miles Downstream:
Population within 0-0.25 miles:
Population within 0.25-0.5 miles:
Population within 0.5-1 miles:
Population within 1-2 miles:
Population within 2-3 miles:
Population within 3-4 miles:
Public Interest:

End of report. Retrieved 4/28/2024 8:07:55 AM.

The preceding materials represent the contents of the databases at the Montana Bureau of Mines and Geology at the time and date of the retrieval. The information is considered unpublished and is subject to correction and review on a daily basis. The Bureau warrants the accurate transmission of the data to the original end user at the time and date of the retrieval. Retransmission of the data to other users is discouraged and the Bureau claims no responsibility if the material is retransmitted. There may be data in the request area that are not recorded at the Bureau.