Data / Mines / Minnesota / Dakota County
Mines in Dakota County, Minnesota: 21 open mines
MSHA lists 21 open mines in Dakota County, Minnesota, run by 15 operators and employing 126 people. Since January 1, 2022 its inspectors issued 164 citations and orders there with $23,605 in proposed penalties, and operators reported 10 injury or illness cases. The operators with the most open mines are County Line Aggregate Inc; Dakota Aggregates LLC; Knopik Crushing Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 21
- Operators
- 15
- Employees
- 126
- Intermittent
- 16
- Active
- 4
- Temporarily Idled
- 1
- Citations and orders since January 1, 2022
- 164
- Significant and substantial
- 18 (11.0%)
- Closure orders
- 5
- High negligence or reckless
- 4
- Proposed penalties
- $23,605
- Amount paid so far
- $21,048
- Inspections
- 156
- Inspector hours on site
- 1,072
- Citations per inspection
- 1.05 (all mines 2.30)
- Accident reports
- 10
- Injury and illness cases
- 10
- Fatalities
- 0
- Latest MSHA record
- October 30, 2026
Operators with the most open mines in Dakota County, Minnesota
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 |
|---|---|---|---|---|---|
| County Line Aggregate Inc | 2 | 5 | 27 | $3,685 | 1 |
| Dakota Aggregates LLC | 2 | 9 | 21 | $3,131 | 2 |
| Knopik Crushing Inc | 2 | 6 | 18 | $2,860 | 0 |
| Solberg Aggregate Inc. | 2 | 5 | 14 | $2,426 | 0 |
| McNamara Contracting Inc | 2 | 8 | 7 | $860 | 0 |
| New Look Contracting | 2 | 9 | 0 | $0 | 0 |
| Fischer Sand & Aggregate LLP | 1 | 12 | 20 | $2,912 | 1 |
| Amrize Mid-America Inc. | 1 | 16 | 16 | $2,425 | 2 |
| Pine Bend Paving, Inc. | 1 | 2 | 13 | $1,730 | 0 |
| Minnesota Dirt Works | 1 | 2 | 9 | $1,280 | 0 |
| Kraemer Mining & Materials, Inc. | 1 | 34 | 7 | $1,003 | 4 |
| Bituminous Roadways, Inc. | 1 | 2 | 5 | $729 | 0 |
| Fischer Mining LLC | 1 | 7 | 5 | $280 | 0 |
| Cemstone Products Company | 1 | 3 | 2 | $284 | 0 |
| Barton Sand & Gravel | 1 | 6 | 0 | $0 | 0 |
Operators with the most citations in Dakota County, Minnesota
Citations and orders issued since January 1, 2022 at their open mines here.
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| County Line Aggregate Inc | 2 | 5 | 27 | $3,685 | 1 |
| Dakota Aggregates LLC | 2 | 9 | 21 | $3,131 | 2 |
| Fischer Sand & Aggregate LLP | 1 | 12 | 20 | $2,912 | 1 |
| Knopik Crushing Inc | 2 | 6 | 18 | $2,860 | 0 |
| Amrize Mid-America Inc. | 1 | 16 | 16 | $2,425 | 2 |
| Solberg Aggregate Inc. | 2 | 5 | 14 | $2,426 | 0 |
| Pine Bend Paving, Inc. | 1 | 2 | 13 | $1,730 | 0 |
| Minnesota Dirt Works | 1 | 2 | 9 | $1,280 | 0 |
| McNamara Contracting Inc | 2 | 8 | 7 | $860 | 0 |
| Kraemer Mining & Materials, Inc. | 1 | 34 | 7 | $1,003 | 4 |
| Bituminous Roadways, Inc. | 1 | 2 | 5 | $729 | 0 |
| Fischer Mining LLC | 1 | 7 | 5 | $280 | 0 |
| Cemstone Products Company | 1 | 3 | 2 | $284 | 0 |
| New Look Contracting | 2 | 9 | 0 | $0 | 0 |
| Barton Sand & Gravel | 1 | 6 | 0 | $0 | 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 |
|---|---|---|---|---|---|
| Fischer Sand & Aggregate | Fischer Sand & Aggregate LLP | Dakota County, MN | Construction sand and gravel | 12 | 20 |
| UMore Park Mining Operation | Dakota Aggregates LLC | Dakota County, MN | Construction sand and gravel | 7 | 19 |
| Amrize Empire Plant | Amrize Mid-America Inc. | Dakota County, MN | Construction sand and gravel | 16 | 16 |
| County Line, Larson Pit | County Line Aggregate Inc | Dakota County, MN | Construction sand and gravel | 3 | 14 |
| Wash Plant #2(Randolph) | County Line Aggregate Inc | Dakota County, MN | Crushed, broken limestone | 2 | 13 |
| PBP-1 | Pine Bend Paving, Inc. | Dakota County, MN | Crushed, broken limestone | 2 | 13 |
| Hastings Quarry | Solberg Aggregate Inc. | Dakota County, MN | Crushed, broken limestone | 3 | 11 |
| Knopik Crushing Inc | Knopik Crushing Inc | Dakota County, MN | Construction sand and gravel | 3 | 9 |
| Lippmann | Knopik Crushing Inc | Dakota County, MN | Sand, common | 3 | 9 |
| Portable Screener | Minnesota Dirt Works | Dakota County, MN | Construction sand and gravel | 2 | 9 |
| KMM Burnsville Quarry | Kraemer Mining & Materials, Inc. | Dakota County, MN | Crushed, broken limestone | 34 | 7 |
| Empire Rock | Fischer Mining LLC | Dakota County, MN | Construction sand and gravel | 7 | 5 |
| Inver Grove Pit | Bituminous Roadways, Inc. | Dakota County, MN | Construction sand and gravel | 2 | 5 |
| McNamara Contracting Inc | McNamara Contracting Inc | Dakota County, MN | Construction sand and gravel | 6 | 4 |
| Berg's Pit | McNamara Contracting Inc | Dakota County, MN | Construction sand and gravel | 2 | 3 |
| Finlay Powerscreener | Solberg Aggregate Inc. | Dakota County, MN | Construction sand and gravel | 2 | 3 |
| Excavating Crew 089 | Cemstone Products Company | Dakota County, MN | Construction sand and gravel | 3 | 2 |
| Portable Screener #1 | Dakota Aggregates LLC | Dakota County, MN | Crushed, broken stone | 2 | 2 |
| NLC # 7 | New Look Contracting | Dakota County, MN | Crushed, broken stone | 8 | 0 |
| MN Portable #5 | Barton Sand & Gravel | Dakota County, MN | Construction sand and gravel | 6 | 0 |
| NLC #1 | New Look Contracting | Dakota County, MN | Construction sand and gravel | 1 | 0 |
Main commodities
| Main commodity | Open mines | Share |
|---|---|---|
| Construction sand and gravel | 14 | 66.7% |
| Crushed, broken limestone | 4 | 19% |
| Crushed, broken stone | 2 | 9.5% |
| Sand, common | 1 | 4.8% |
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 | 35 | 2 | $4,705 | 1 |
| 2023 | 44 | 3 | $6,437 | 3 |
| 2024 | 32 | 3 | $4,761 | 3 |
| 2025 | 34 | 5 | $5,234 | 2 |
| 2026 | 19 | 5 | $2,468 | 1 |
Standards cited most at mines in Dakota County, Minnesota
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 56.14132 | Surface metal and nonmetal mines | 19 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 17 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 9 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.12030 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14109 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.20011 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines in Dakota County, Minnesota
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 5 |
| No lost time, or an occupational illness | 5 |
What the accident reports at mines in Dakota County, Minnesota describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 3 |
| Machinery | 3 |
| Slip or fall of person | 1 |
| Handtools (nonpowered) | 1 |
| Electrical | 1 |
| Disorders (repeated trauma) | 1 |
Equipment named in accident reports at mines in Dakota County, Minnesota
| Equipment | Reports |
|---|---|
| Welding machine | 1 |
| Hand tools (not powered) | 1 |
| Hand tools (powered) | 1 |
| Pneumatic blasting agent loader | 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.