Data / Mines / Minnesota / Hubbard County
Mines in Hubbard County, Minnesota: 9 open mines
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
MSHA lists 9 open mines in Hubbard County, Minnesota, run by 4 operators and employing 19 people. Since January 1, 2022 its inspectors issued 49 citations and orders there with $7,097 in proposed penalties, and operators reported no injury or illness cases. The operators with the most open mines are Northern Aggregate Inc.; Cumber Construction Inc; Headwaters Concrete LLC. Data from MSHA, November 6, 2026.
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- Open mines
- 9
- Operators
- 4
- Employees
- 19
- Intermittent
- 8
- New Mine
- 1
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 49
- Significant and substantial
- 10 (20.4%)
- Closure orders
- 0
- High negligence or reckless
- 0
- Proposed penalties
- $7,097
- Amount paid so far
- $6,946
- Inspections
- 45
- Inspector hours on site
- 151
- Citations per inspection
- 1.09 (all mines 2.30)
- Accident reports
- 0
- Injury and illness cases
- 0
- Fatalities
- 0
- Latest MSHA record
- October 28, 2026
Operators with the most open mines in Hubbard 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 |
|---|---|---|---|---|---|
| Northern Aggregate Inc. | 3 | 11 | 23 | $3,618 | 0 |
| Cumber Construction Inc | 3 | 5 | 10 | $1,033 | 0 |
| Headwaters Concrete LLC | 1 | 2 | 14 | $2,152 | 0 |
Operators with the most citations in Hubbard 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 |
|---|---|---|---|---|---|
| Northern Aggregate Inc. | 3 | 11 | 23 | $3,618 | 0 |
| Headwaters Concrete LLC | 1 | 2 | 14 | $2,152 | 0 |
| Cumber Construction Inc | 3 | 5 | 10 | $1,033 | 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 |
|---|---|---|---|---|---|
| Headwaters Concrete LLC | Headwaters Concrete LLC | Hubbard County, MN | Construction sand and gravel | 2 | 14 |
| Portable Crusher #2 | Northern Aggregate Inc. | Hubbard County, MN | Construction sand and gravel | 7 | 12 |
| Wash Plant #2 | Northern Aggregate Inc. | Hubbard County, MN | Construction sand and gravel | 2 | 8 |
| Portable Crusher | Cumber Construction Inc | Hubbard County, MN | Construction sand and gravel | 2 | 6 |
| Wash Plant | Northern Aggregate Inc. | Hubbard County, MN | Construction sand and gravel | 2 | 3 |
| Terex/Cedarapids Portable Screening Plant | Cumber Construction Inc | Hubbard County, MN | Construction sand and gravel | 2 | 2 |
| Cumber's Pit | Cumber Construction Inc | Hubbard County, MN | Construction sand and gravel | 1 | 2 |
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 | 9 | 2 | $1,385 | 0 |
| 2023 | 9 | 4 | $1,299 | 0 |
| 2024 | 11 | 0 | $1,617 | 0 |
| 2025 | 11 | 3 | $1,890 | 0 |
| 2026 | 9 | 1 | $906 | 0 |
Standards cited most at mines in Hubbard 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 56.12004 | Surface metal and nonmetal mines | 10 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 7 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 6 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 4 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14103 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.14108 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.14211 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.5001 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 1 |
| 30 CFR 56.18002 | Surface metal and nonmetal mines | 1 |
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.