Mine · Modoc County, California, United States
Glass Mountain Pumice
Glass Mountain Pumice is a mine in Modoc County, California, United States, owned by Quikrete Holdings Inc.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Modoc County | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Status | Operating (active) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Commodities | pumice (mainly pumice) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Owner | Quikrete Holdings Inc. (controls the operator) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Operator | Monarch Mountain Minerals & Aggregates, LLC | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Employees | 7 people (annual average, in 2025) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Mine type | Surface | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Coordinates | 41.6444, -121.3275 | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
Research on this mine and its owner.Who owns it up to the parent company, its permits, resources and offtake, and an introduction to the owner.
Request researchHow its owner compares
Quikrete Holdings Inc. owns 4 of the 2,675 mines in the United States in our data with a named owner; 99 owners have more. Counts cover the mines in our data that name an owner, holder or operator; an asset with several owners counts for each.
| Owner in United States | Rank | Mines | Share |
|---|---|---|---|
| Alpha Metallurgical Resources Inc | 1st | 56 | 2.1% |
| Sev.en Global Investments a.s. | 2nd | 50 | 1.9% |
| Rosebud Mining Company | 3rd | 40 | 1.5% |
| Martin Marietta Materials Inc | 4th | 29 | 1.1% |
| Metinvest B V | 4th | 29 | 1.1% |
| Quikrete Holdings Inc. | 100th | 4 | 0.15% |
Nearby
Within 50 km of this mine: 70 water rights (47 active), measured from the coordinates in the facts above. The table shows the nearest 3.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Reservoir to Tule Lake water right 49461 | Water right | — | Active | 40 km |
| Mills Creek groundwater water right 79853 | Water right | — | Active | 40 km |
| Upper Klamath Lake Basin groundwater water right 90529 | Water right | — | Active | 41 km |
Owner, operator and place
More from Quikrete Holdings Inc.
Other mines in California
Data on this page
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- Oregon Water Resources Department water rights (points of diversion). Oregon Water Resources Department water rights (points of diversion), Public domain by statute.