Data / Mines / Colorado / Weld County
Mines in Weld County, Colorado: 40 open mines
MSHA lists 40 open mines in Weld County, Colorado, run by 23 operators and employing 368 people. Since January 1, 2022 its inspectors issued 596 citations and orders there with $372,632 in proposed penalties, and operators reported 44 injury or illness cases, 1 of them fatal. The operators with the most open mines are J-2 Contracting Co.; L G Everist Inc; Burnco. Data from MSHA, November 6, 2026.
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- Open mines
- 40
- Operators
- 23
- Employees
- 368
- Active
- 30
- Intermittent
- 9
- New Mine
- 1
- Mines run by individuals, counted and not listed
- 3
- Citations and orders since January 1, 2022
- 596
- Significant and substantial
- 120 (20.1%)
- Closure orders
- 5
- High negligence or reckless
- 46
- Proposed penalties
- $372,632
- Amount paid so far
- $297,690
- Inspections
- 391
- Inspector hours on site
- 2,762
- Citations per inspection
- 1.52 (all mines 2.30)
- Accident reports
- 44
- Injury and illness cases
- 44
- Fatalities
- 1
- Latest MSHA record
- November 4, 2026
Operators with the most open mines in Weld County, Colorado
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| J-2 Contracting Co. | 4 | 26 | 11 | $1,041 | 3 |
| L G Everist Inc | 3 | 30 | 42 | $7,889 | 11 |
| Burnco | 3 | 16 | 40 | $7,519 | 1 |
| Martin Marietta Materials, Inc. | 3 | 33 | 29 | $205,978 | 5 |
| Asphalt Specialties Co Inc | 3 | 12 | 14 | $2,093 | 1 |
| Raptor Materials LLC | 2 | 29 | 58 | $17,976 | 4 |
| Laser Oilfield Services | 2 | 4 | 33 | $12,102 | 0 |
| Connell Resources, Inc. | 2 | 13 | 22 | $3,322 | 2 |
| Weld County | 2 | 11 | 11 | $1,432 | 0 |
| C & H Excavation LLC | 1 | 10 | 58 | $30,626 | 3 |
| Colorado Sand Company | 1 | 85 | 39 | $6,482 | 8 |
| Mill Iron Mining | 1 | 9 | 38 | $20,194 | 0 |
| Northern Colorado Constructors, Inc. | 1 | 14 | 25 | $4,351 | 1 |
| Ready Mixed Concrete Company | 1 | 22 | 21 | $3,055 | 1 |
| Bucklen Equipment Company Incorporated | 1 | 3 | 15 | $3,901 | 0 |
| Monarch Mountain Minerals & Aggregates, LLC | 1 | 2 | 14 | $3,784 | 0 |
| Loveland Ready Mix Concrete Inc | 1 | 5 | 13 | $1,963 | 0 |
| Vip Mine LLC | 1 | 5 | 11 | $1,205 | 0 |
| Pine Bluffs Gravel & Excavating | 1 | 2 | 8 | $1,764 | 0 |
| Brannan Sand & Gravel Company LLC | 1 | 5 | 6 | $884 | 0 |
| Denver Rock Company | 1 | 1 | 6 | $923 | 0 |
| Loudwire Diesel LLC | 1 | 2 | 2 | $316 | 0 |
Operators with the most citations in Weld County, Colorado
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| Raptor Materials LLC | 2 | 29 | 58 | $17,976 | 4 |
| C & H Excavation LLC | 1 | 10 | 58 | $30,626 | 3 |
| L G Everist Inc | 3 | 30 | 42 | $7,889 | 11 |
| Burnco | 3 | 16 | 40 | $7,519 | 1 |
| Colorado Sand Company | 1 | 85 | 39 | $6,482 | 8 |
| Mill Iron Mining | 1 | 9 | 38 | $20,194 | 0 |
| Laser Oilfield Services | 2 | 4 | 33 | $12,102 | 0 |
| Martin Marietta Materials, Inc. | 3 | 33 | 29 | $205,978 | 5 |
| Northern Colorado Constructors, Inc. | 1 | 14 | 25 | $4,351 | 1 |
| Connell Resources, Inc. | 2 | 13 | 22 | $3,322 | 2 |
| Ready Mixed Concrete Company | 1 | 22 | 21 | $3,055 | 1 |
| Bucklen Equipment Company Incorporated | 1 | 3 | 15 | $3,901 | 0 |
| Asphalt Specialties Co Inc | 3 | 12 | 14 | $2,093 | 1 |
| Monarch Mountain Minerals & Aggregates, LLC | 1 | 2 | 14 | $3,784 | 0 |
| Loveland Ready Mix Concrete Inc | 1 | 5 | 13 | $1,963 | 0 |
| J-2 Contracting Co. | 4 | 26 | 11 | $1,041 | 3 |
| Weld County | 2 | 11 | 11 | $1,432 | 0 |
| Vip Mine LLC | 1 | 5 | 11 | $1,205 | 0 |
| Pine Bluffs Gravel & Excavating | 1 | 2 | 8 | $1,764 | 0 |
| Brannan Sand & Gravel Company LLC | 1 | 5 | 6 | $884 | 0 |
| Denver Rock Company | 1 | 1 | 6 | $923 | 0 |
| Loudwire Diesel LLC | 1 | 2 | 2 | $316 | 0 |
Mines with the most citations
Open mines, ranked by citations and orders since January 1, 2022.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| North Weld Gravel Pit | C & H Excavation LLC | Weld County, CO | Construction sand and gravel | 10 | 58 |
| 115 WP | Raptor Materials LLC | Weld County, CO | Construction sand and gravel | 20 | 56 |
| Keenesburg #2 | Colorado Sand Company | Weld County, CO | Sand, industrial | 85 | 39 |
| Portable Crusher #1 | Mill Iron Mining | Weld County, CO | Construction sand and gravel | 9 | 38 |
| Inouye Gravel Mine | Burnco | Weld County, CO | Construction sand and gravel | 9 | 29 |
| Portable Plant 1 | Laser Oilfield Services | Weld County, CO | Construction sand and gravel | 2 | 28 |
| Bennett Pit | Northern Colorado Constructors, Inc. | Weld County, CO | Construction sand and gravel | 14 | 25 |
| Ragsdale Reservoirs | L G Everist Inc | Weld County, CO | Construction sand and gravel | 6 | 23 |
| Riverbend Sand and Gravel | Martin Marietta Materials, Inc. | Weld County, CO | Construction sand and gravel | 23 | 21 |
| Pit 25-Morton Lakes | Ready Mixed Concrete Company | Weld County, CO | Construction sand and gravel | 22 | 21 |
| Fort Lupton Sand & Gravel | L G Everist Inc | Weld County, CO | Construction sand and gravel | 6 | 17 |
| Portable Crusher #1 | Connell Resources, Inc. | Weld County, CO | Construction sand and gravel | 10 | 15 |
| Bucklen Equipment Company Incorporated | Bucklen Equipment Company Incorporated | Weld County, CO | Construction sand and gravel | 3 | 15 |
| Denm | Monarch Mountain Minerals & Aggregates, LLC | Weld County, CO | Construction sand and gravel | 2 | 14 |
| Green/Croissant | Loveland Ready Mix Concrete Inc | Weld County, CO | Construction sand and gravel | 5 | 13 |
| Vip Mine | Vip Mine LLC | Weld County, CO | Construction sand and gravel | 5 | 11 |
| Portable Crusher #2 | Weld County | Weld County, CO | Construction sand and gravel | 8 | 8 |
| Portable #2 | Pine Bluffs Gravel & Excavating | Weld County, CO | Construction sand and gravel | 2 | 8 |
| Portable Crusher #2 | Connell Resources, Inc. | Weld County, CO | Construction sand and gravel | 3 | 7 |
| Nelson Mining Resource | Asphalt Specialties Co Inc | Weld County, CO | Construction sand and gravel | 2 | 7 |
| Parsons Sand and Gravel | Martin Marietta Materials, Inc. | Weld County, CO | Construction sand and gravel | 8 | 6 |
| Pit 26-Nix | Brannan Sand & Gravel Company LLC | Weld County, CO | Construction sand and gravel | 5 | 6 |
| Ewing Gravel Pit | Burnco | Weld County, CO | Construction sand and gravel | 1 | 6 |
| Denver Rock | Denver Rock Company | Weld County, CO | Construction sand and gravel | 1 | 6 |
| Chavers Mining Resource | Asphalt Specialties Co Inc | Weld County, CO | Construction sand and gravel | 8 | 5 |
| Nissen Gravel Mine | Burnco | Weld County, CO | Construction sand and gravel | 6 | 5 |
| Poudre Ponds Pit | J-2 Contracting Co. | Weld County, CO | Construction sand and gravel | 3 | 5 |
| Portable Plant 2 | Laser Oilfield Services | Weld County, CO | Construction sand and gravel | 2 | 5 |
| Sweet Valley Reservoir Complex | J-2 Contracting Co. | Weld County, CO | Construction sand and gravel | 14 | 3 |
| Portable Reclamation Crew | Weld County | Weld County, CO | Construction sand and gravel | 3 | 3 |
| Firestone Gravel Resource | L G Everist Inc | Weld County, CO | Construction sand and gravel | 18 | 2 |
| Two Rivers | Raptor Materials LLC | Weld County, CO | Construction sand and gravel | 9 | 2 |
| Platte Sand and Gravel | Martin Marietta Materials, Inc. | Weld County, CO | Construction sand and gravel | 2 | 2 |
| Portable Plant 2 | Loudwire Diesel LLC | Weld County, CO | Construction sand and gravel | 2 | 2 |
| Evans Sand and Gravel | Asphalt Specialties Co Inc | Weld County, CO | Construction sand and gravel | 2 | 2 |
| Sunset Industrial Pit | J-2 Contracting Co. | Weld County, CO | Not stated | 0 | 2 |
| Hunt Water Res #2 | J-2 Contracting Co. | Weld County, CO | Construction sand and gravel | 9 | 1 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 38 | 95% |
| Sand, industrial | 1 | 2.5% |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 94 | 12 | $33,901 | 5 |
| 2023 | 130 | 21 | $45,140 | 20 |
| 2024 | 164 | 38 | $239,951 | 5 |
| 2025 | 121 | 26 | $35,745 | 7 |
| 2026 | 87 | 23 | $17,895 | 7 |
Standards cited most at mines in Weld County, Colorado
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 51 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 47 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 44 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 27 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 26 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 22 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 20 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 19 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 18 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 16 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 15 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 15 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 14 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 13 |
Injury and illness cases at mines in Weld County, Colorado
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 1 |
| Days away from work or restricted activity | 24 |
| No lost time, or an occupational illness | 19 |
What the accident reports at mines in Weld County, Colorado describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 13 |
| Slip or fall of person | 8 |
| Handtools (nonpowered) | 8 |
| Powered haulage | 4 |
| Machinery | 4 |
| Other | 2 |
| Exploding vessels under pressure | 1 |
| Electrical | 1 |
| Falling/sliding/rolling materials | 1 |
| Disorders (repeated trauma) | 1 |
Equipment named in accident reports at mines in Weld County, Colorado
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 8 |
| Front-end loader | 3 |
| Hand tools (powered) | 3 |
| Screen | 2 |
| Man lift | 1 |
| Bulldozer | 1 |
| Air compressor | 1 |
| Classifier | 1 |
| Crusher | 1 |
| Ore haulage trucks - off highway trucks | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.