The data below represent everything available in the MBMG Abandoned and Inactive Mines (AIM) database.
AIM Id | Name | Alternate Name | District | County |
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CC002885 | BIG SEVEN | MONTANA/NEIHART | CASCADE |
MRDS | AMLI | MILS | Latitude | Longitude | Datum |
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W014726 | 07-156 | 300130038 | 46.9486 | -110.7042 |
Township | Range | Section | QSection | UTM Northing | UTM Easting | UTM Zone | UTM Datum |
---|---|---|---|---|---|---|---|
14N | 08E | 28 | ADAA | 5199277 | 522513 | 12 |
Average Elevation | Elev Units | Land Owner | 250K Quad | 100K Quad | 24K Quad |
---|---|---|---|---|---|
F | WHITE SULPHUR | WHITE SULPHUR | NEIHART |
Property Type | Update Date | Who Updated |
---|---|---|
LODE | 5/21/1998 | JDL |
Commodities Identified |
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GOLD LEAD SILVER ZINC |
Information |
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Agency: NF Region District: R1 Ranger District: KINGS HILL Forest Service Tract: Watershed Code: 10030105 Forest or Resource Area: LEWIS AND CLARK Owner: P Impact: L Report: The Big Seven site is located about 2 miles northeast of Neihart (Robertson, 1951). This was a gold, silver, lead, and zic mine. The mill tailings were impounded in a pond and two piles. The volume of the tailing s was estimated to be 2,580 cubic yards. The volume of the waste rock was estimated to be 25,800 cubic yards. Sediments released were mercury and manganese and there was zinc and manganese in the water. Cadmium levels exceeded the drinking water standards. One adit was discharging at a significant flow and had iron staining 1,000 feet downstream. The water had a pH of 6.63 and exceeded drinking water standards for cadmium and nickel. There were several building that were in fair condition, and there were two open adits. Robertson states that the Big Seven mine was developed by four main adits, the three upper adits were driven along the vein and the lower adit was driven a s a crosscut. The lower adit was about 800 feet long and then it was driven as a drift for about 2,900 feet. This vein is about seven feet wide and is nearly vertical. The ore minerals in the uppers parts of the mine were silver sulfides and the lower parts were mainly lead and zinc. There were two ore shoots that were about 600 feet long. |
Sample Id | Sampler | pH | SC | Date | TempC | Flow Rate | Flow Units | Flow Method | Source | Ind No | Veg | Stain | Salt | Sulf | Turb | Location Related to Stream | Stream | Sedimention | Photos Available? | Photo Numbers | Remarks |
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BSNS10L | PAH | 7.1 | 46.8 | 5/27/1998 | 5.3 | 2.1 | CFS | METER | STREAM | UP | SNOW CREEK | Y | 60-1 | ||||||||
BSNS20M | PAH | 7.09 | 150.5 | 5/27/1998 | 7.1 | 5.6 | CFS | METER | STREAM | DOWN | SNOW CREEK | Y | 60-2 |
Information |
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Mill Tailings: Y Adit Discharge: Y Metal Leaching: Y Water Erosion: Y Residence: Hazardous Materials: Open Adit: Y Visit: Y Comments: JEFF LONN; 5/17/98; ALSO DSL-AMRB/PIONEER TECHNICAL SERVICES REPORT (1995). |
Information |
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Investigator: J. LONN Date: 5/17/1998 Photos Available?: Access: Nearest Wetlands/Bog: Drainage Basin: 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 8/24/2024 11:20:38 PM.
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.