| Deposit ID | 10278107 |
|---|---|
| MAS/MILS ID | 550930003 |
| Record type | Site |
| Current site name | Maiden Rock Mine |
| Alternate or previous names | Maiden Rock Silica Sand Mine, Maiden Rock Silica Sand Company, Maiden Rock |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -92.29584, 44.55767 (WGS84) |
| Elevation | 305 |
| Location accuracy | 10(meters) |
| Relative position | Mine area visible on imagery. Adit enters hillside north and east of the main plant. Coordinates are for adit/underground mine entrance. |
Political divisions (FIPS codes)
Pierce(county)
Wisconsin(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Maiden Rock(quadrangle 1:24,000 scale)
Hastings(quadrangle 1:100,000 scale)
Saint Paul(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Rush-Vermillion(hydrologic unit)
Upper Mississippi-Black-Root(hydrologic accounting unit)
Upper Mississippi-Black-Root(hydrologic subregion)
Upper Mississippi(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Wisconsin | Pierce |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 4th Principal | 24N | 16W | 15, 14 | SE of SE, S2 of NW4 | Wisconsin |
| Commodity | Importance |
|---|---|
| Sand and Gravel, Industrial | Primary |
| Sand and Gravel, Industrial/Frac Sand | Primary |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone | ||||
| Rock type qualifier | Friable, nearly pure quartz-rich sandstone. | ||||
| Rock unit name | Jordan Sandstone | ||||
| |||||
| Ore Body (1) | Cambrian, undivided |
|---|
| Operation type | Underground |
|---|---|
| Development status | Producer |
| Commodity type | Non-metallic |
| Significant | Yes |
| Discovery year | 1920 |
| Production years | 1920s to present (2015) |
| Ownership category | Private |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Fairmount/Santrol |
| Home office | 18461 County Rd 13 Johnstown, CO 80534 970-535-4117 |
| Year | 2015 |
| Type | Owner |
|---|---|
| Owner | Wisconsin Industrial Sand Company (WISC, a subsidiary of Fairmount Minerals) |
| Home office | Fairmount Minerals 8834 Mayfield Road Chesterland, OH 44026 800-255-7263 |
| Year | 2014 |
| First year | 1996 |
| Type | Unknown |
|---|---|
| Owner | Maiden Rock Silica Sand Co. |
| ID | 4701147 |
| Year | 1979 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 550930003 | |
| Mine Safety and Health Administration | MSHA | MSHA | 4701147 | |
| USGS | Mineral Resources Data System | MRDS | 10401192 | newMRDS 10401192, merged and deleted. |
Wilson, Anna B., 2015, unpub. USGS Field Notes.
Fairmount Minerals, 2014, Corporate website, accessed 4/22/2014 at http://www.fairmountminerals.com/Fairmount-Corporate/Locations/Wisconsin--Maiden-Rock.aspx
Fairmount/Santrol, 2015, Corporate website, accessed 8/11/2015 at http://fairmountsantrol.com/locations/
FairmountSantrol, 2015, Defining Different--2014 Annual Report, p. 39, accessed Aug. 13, 2015 at http://investors.fairmountsantrol.com/files/doc_financials/2014/2014-Annual-Report.pdf.
| Subject category | Comment text |
|---|---|
| Deposit | Sand is coarser near the top of the Jordan formation, finer lower in the formation. (Annual Report, p. 39). |
| General | Anna Wilson and Mary Ellen Benson toured Fairmount/Santrol's underground Maiden Rock Mine on July 13, 2015 with Mine Manager Danielle Dahms and Regional Environmental Coordinator Jennifer McCartney. Access to the workings is from adit at the coordinates given (revised) in this record. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 1982-08-05 | Eastern Field Operations Center (EFOC) | U.S. Bureau of Mines | |
| Updater | 2014-04-22 | Wilson, Anna B | U.S. Geological Survey | merged and deleted duplicate record 10401192 |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 06/17/1999 |
|---|---|
| MSHA mine ID | 4701147 |
| Mine name (MSHA) | MAIDEN ROCK |
| Current operator | Wisconsin Frac Sand Inc |
| Current controller (parent) | Eldon L Duncan |
| Mine type | Underground (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.