Mines and quarries in Larimer County, CO
21 mines not abandoned in Larimer County, CO, in the MSHA file of October 2, 2026.
| Mine | Mine ID | Industry group | Status since |
|---|---|---|---|
| Amrize Ingleside Quarry Amrize West Central Inc. | 0505140 | Stone | Feb 28, 2022 |
| Barnard Quarry Blue Mt Stone | 0504196 | Stone | Feb 10, 2021 |
| Coulson Portable Coulson Excavating Company, Inc. | 0503522 | Sand and gravel | Aug 23, 2021 |
| Coulson Portable Wash Plant Coulson Excavating Company, Inc. | 0504800 | Sand and gravel | Feb 8, 2005 |
| Glacier Rock Pit Glacier Rock Company | 0504634 | Sand and gravel | Nov 6, 2023 |
| Heitf Pit Mill Iron Mining | 0505025 | Sand and gravel | Jan 2, 2026 |
| Hotchkiss Mine BB Stoneworks | 0504666 | Stone | Aug 23, 2022 |
| Knox Pit Loveland Ready Mix Concrete, Inc | 0505169 | Sand and gravel | Apr 16, 2026 |
| Loudwire Quarry Loudwire Diesel LLC | 0505154 | Sand and gravel | Jan 26, 2023 |
| LOVELAND READY-MIX CONCRETE INC SAND AND Loveland Ready Mix Concrete Inc | 0501004 | Sand and gravel | Nov 1, 2021 |
| MASONVILLE QUARRY Masonville Stone Company | 0504013 | Stone | Oct 1, 2019 |
| Meadow Hollow Quarry Colorado Quarry 1, LLC | 0505153 | Stone | Apr 3, 2024 |
| Owl Canyon Quarry & Mill Pete Lien and Sons, Inc. | 0503222 | Stone | Oct 18, 1988 |
| PORTABLE #1 Fort Collins Simon Contractors | 0504083 | Sand and gravel | Apr 16, 2026 |
| Portable Crusher Larimer County Road & Bridge Department | 0504124 | Sand and gravel | Feb 1, 2022 |
| PORTABLE WASH PLANT #1 Connell Resources, Inc. | 0503795 | Sand and gravel | May 14, 2024 |
| Rocky Road Quarry Colorado Flagstone Inc | 0503995 | Stone | Nov 1, 2022 |
| Sprague Stone LLC | 0505077 | Stone | Jul 31, 2019 |
| Stone Wholesale Brownstone Quarry Stone Wholesale, Inc. | 0504910 | Stone | May 24, 2016 |
| TRUPP LOVELAND Arkins Park Stone | 0502666 | Stone | Apr 30, 2024 |
| WEAVER QUARRY Loukonen Brothers Stone | 0500079 | Stone | Apr 30, 2024 |
Alphabetical order — this site ranks no one. Mines that are not abandoned in the MSHA file of October 2, 2026. Sole proprietors are found by mine ID only. How to read this.