Data / Mines / Iowa

Mines in Iowa: 263 open mines and MSHA citations

MSHA lists 263 open mines in Iowa, run by 91 operators and employing 2,014 people. Since January 1, 2022 its inspectors issued 4,042 citations and orders there with $2,736,806 in proposed penalties, and operators reported 245 injury or illness cases, 1 of them fatal. The operators with the most open mines are Wendling Quarries Inc; Martin Marietta Materials, Inc.; Bruening Rock Products Inc. Data from MSHA, November 6, 2026.

SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.

Open mines

263

Operators

91

Employees

2,014

Intermittent

130

Active

128

Temporarily Idled

4

NonProducing

1

Mines run by individuals, counted and not listed

9

Citations and orders since January 1, 2022

4,042

Significant and substantial

460 (11.4%)

Closure orders

54

High negligence or reckless

341

Proposed penalties

$2,736,806

Amount paid so far

$2,020,485

Inspections

2,363

Inspector hours on site

21,846

Citations per inspection

1.71 (all mines 2.30)

Accident reports

267

Injury and illness cases

245

Fatalities

1

Latest MSHA record

November 5, 2026

Operators with the most open mines in Iowa

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

Operators with the most citations in Iowa

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 Iowa

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 Iowa

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

What the accident reports at mines in Iowa describe

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

Equipment named in accident reports at mines in Iowa

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.