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

Sites Table
AIM Id Name Alternate Name District County
BE000185 BANNOCK PLACER - BANNACK - KELLY GRASSHOPPER STRIP MINE (?) BANNACK BEAVERHEAD
MRDS AMLI MILS Latitude Longitude Datum
300010259 45.1206 -112.9222
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
08S 11W 23 B 4997922 348813 12
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
5600 F DILLON DILLON ELI SPRING
Property Type Update Date Who Updated
PLACER 6/27/1995 CBD
Commodities Table
Commodities Identified
GOLD
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: U
Report: Bannock Placer BE000185 These workings are located on the Eli Spring quadrangle in the same place as the Grasshopper Strip Mine (DSL-AMRB, 1990). At that time, the DSL-AMRB had plans to recontour and backfill any openings. Historically, the Bannack placers worked two levels: the creek alluvial gravels and terrace gravels (Lyden, 1948). Patented placer claims are located along the creek bottom but BLM land is adjacent to the private land. The area plots on the topo with many of the workings on BLM land. Winchell (1914) credited these placers with producing $2,500,000 in gold from their discovery by John White and William Eads in 1862 to 1905. Lyden (1948) estimated the remainder of the gold production was valued at $350,000. The terrace gravel deposit was worked by hydraulic methods and the creek gravels were worked by hand, rocker to connected-bucket dredge (Lyden, 1948). There was no mention of mercury being used.
Screening Criteria Table
Information
Mill Tailings: N
Adit Discharge: N
Metal Leaching: N
Water Erosion: N
Residence: N
Hazardous Materials: N
Open Adit: N
Visit: Y
Comments: MIXED OWNERSHIP; LOCATION INACCURATE, ANOTHER NAME FOR GRASSHOPPER STRIP MINE.
Mining Methods Table
Years Dredge dry land Dredge float Ground sluicing Boom dam Drifting Hydraulic Pan rocker Long Tom Mercury
1895 Y Y Y
1902-1965 Y Y Y
Placer Table
Information
Gold: Y
Silver:
Titanium:
Rare Earth Elements:
Sapphire:
Garnet:
Tungsten:
Platinum:
Magnetite:
Hematite:
Pyrite:
Commodity Ref: McCulloch, Robin, Lewis, Bob, Keill, Don, and Shumaker, Matthew,, 2003, Applied gold placer exploration and evaluation techniques, MBMG Special Publication 115, 267 p.
Geologic Source: Skarn gold.
Geologic Source Ref: McCulloch, Robin, Lewis, Bob, Keill, Don, and Shumaker, Matthew,, 2003, Applied gold placer exploration and evaluation techniques, MBMG Special Publication 115, 267 p.
Lag:
Transported:
Type Comments: Gulch placer. Geach - "2 kinds; Late Pleistocene gold-bearing terrace gravels about 100 ft above creek level and Recent gravel bars in the creek bed." -taken from Lyden, 1948. Bench gravels worked by hydraulic mining & gravels bars by primative sluicing to dredging. Field visit: this area in section 23 was worked by dry-land dredge (land-based wash plant) and a track-driven dragline.
Type Ref: McCulloch, Robin, Lewis, Bob, Keill, Don, and Shumaker, Matthew,, 2003, Applied gold placer exploration and evaluation techniques, MBMG Special Publication 115, 267 p.
Unknown:
Fine:
Coarse:
Comments:
Size Ref:
Finess: 0.907
Fineref: McCulloch, Robin, Lewis, Bob, Keill, Don, and Shumaker, Matthew,, 2003, Applied gold placer exploration and evaluation techniques, MBMG Special Publication 115, 267 p.
Spoil pile:
Wash pile:
Wash over:
Wash under:
Waste Ref:
Year Discovered: 1862
Rank Table
Information
Investigator: P. HARGRAVE
Date:
Photos Available?:
Access:
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:
Safety Risk from Unstable Structures:
Safety Risk from Chemicals:
Safety Risk from Solid Waste (includes sharp rusted items):
Safety Risk from Explosives:
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 4/27/2024 9:19:27 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.