Data / Mines / Minnesota

Mines in Minnesota: 634 open mines and MSHA citations

MSHA lists 634 open mines in Minnesota, run by 317 operators and employing 5,033 people. Since January 1, 2022 its inspectors issued 8,102 citations and orders there with $8,608,434 in proposed penalties, and operators reported 496 injury or illness cases, 1 of them fatal. The operators with the most open mines are Ulland Brothers Inc; Amrize Mid-America Inc.; Northstar Materials, Inc.. Data from MSHA, November 6, 2026.

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Open mines

634

Operators

317

Employees

5,033

Intermittent

546

Active

55

Temporarily Idled

28

New Mine

5

Mines run by individuals, counted and not listed

71

Citations and orders since January 1, 2022

8,102

Significant and substantial

1,242 (15.3%)

Closure orders

102

High negligence or reckless

307

Proposed penalties

$8,608,434

Amount paid so far

$6,795,578

Inspections

4,011

Inspector hours on site

30,688

Citations per inspection

2.02 (all mines 2.30)

Accident reports

525

Injury and illness cases

496

Fatalities

1

Latest MSHA record

November 5, 2026

Operators with the most open mines in Minnesota

Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.

Operators with the most citations in Minnesota

Citations and orders issued since January 1, 2022 at their open mines here.

Mines with the most citations

Open mines, ranked by citations and orders since January 1, 2022.

Counties

Mines by kind

Main commodities

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

Standards cited most at mines in Minnesota

Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.

Injury and illness cases at mines in Minnesota

Accident reports by degree of injury, as the operator reported them to MSHA.

What the accident reports at mines in Minnesota describe

Accident classification, as MSHA codes the circumstances that contributed most directly.

Equipment named in accident reports at mines in Minnesota

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.