Data / Mines / Montana

Mines in Montana: 256 open mines and MSHA citations

MSHA lists 256 open mines in Montana, run by 162 operators and employing 4,106 people. Since January 1, 2022 its inspectors issued 4,449 citations and orders there with $2,360,420 in proposed penalties, and operators reported 479 injury or illness cases, 2 of them fatal. The operators with the most open mines are Montana Mtls & Cons; Schellinger Construction Company Inc; TMC Inc. Data from MSHA, November 6, 2026.

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Open mines

256

Operators

162

Employees

4,106

Intermittent

153

Active

66

Temporarily Idled

28

NonProducing

5

New Mine

4

Mines run by individuals, counted and not listed

29

Citations and orders since January 1, 2022

4,449

Significant and substantial

516 (11.6%)

Closure orders

77

High negligence or reckless

225

Proposed penalties

$2,360,420

Amount paid so far

$1,619,909

Inspections

1,942

Inspector hours on site

27,704

Citations per inspection

2.29 (all mines 2.30)

Accident reports

506

Injury and illness cases

479

Fatalities

2

Latest MSHA record

November 4, 2026

Operators with the most open mines in Montana

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

Operators with the most citations in Montana

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 Montana

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 Montana

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

What the accident reports at mines in Montana describe

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

Equipment named in accident reports at mines in Montana

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.