Data / Mines / Nebraska / Fort Calhoun Underground Mine
Fort Calhoun Underground Mine: 92 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Fort Calhoun Underground Mine is an active crushed, broken limestone underground mine in Washington County, Nebraska, operated by Martin Marietta Materials, Inc. with 102 employees on MSHA's record (mine ID 2501300). Since January 1, 2022 MSHA inspectors issued 92 citations and orders there with $56,708 in proposed penalties, and 10 accident reports were filed there, with 6 injury or illness cases.
The request: Watch Fort Calhoun Underground Mine (MSHA mine ID 2501300) in Washington County, Nebraska: each new citation and each accident report. $10 of work on sign-up, no card.
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.
- MSHA mine ID
- 2501300
- Status
- Active since May 2, 2017
- Main commodity
- Crushed, broken limestone
- Mine type
- Underground
- County
- Washington County, Nebraska
- Nearest town
- Fort Calhoun
- Operator
- Martin Marietta Materials, Inc.
- Parent company
- Martin Marietta Materials Inc
- Employees
- 102
- MSHA field office
- Fort Dodge IA Field Office
- Citations and orders since January 1, 2022
- 92
- Significant and substantial
- 17 (18.5%)
- Closure orders
- 3
- High negligence or reckless
- 11
- Proposed penalties
- $56,708
- Amount paid so far
- $56,708
- Inspections
- 31
- Inspector hours on site
- 998
- Citations per inspection
- 2.97 (all mines 2.30)
- Accident reports
- 10
- Injury and illness cases
- 6
- Fatalities
- 0
- Latest MSHA record
- October 27, 2026
- Citations issued to contractors here
- 64 ($47,172 proposed)
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 | 17 | 7 | $11,292 | 0 |
| 2023 | 21 | 5 | $16,126 | 1 |
| 2024 | 29 | 4 | $25,286 | 1 |
| 2025 | 8 | 0 | $1,506 | 3 |
| 2026 | 17 | 1 | $2,498 | 1 |
Standards cited most at Fort Calhoun Underground Mine
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 57.14100 | Underground metal and nonmetal mines | 7 |
| 30 CFR 57.11051 | Underground metal and nonmetal mines | 4 |
| 30 CFR 57.3360 | Underground metal and nonmetal mines | 3 |
| 30 CFR 47.44 | Hazard communication | 3 |
| 30 CFR 57.9300 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.15001 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.4102 | Underground metal and nonmetal mines | 3 |
| 30 CFR 57.15031 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.12020 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.6202 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.4201 | Underground metal and nonmetal mines | 2 |
| 30 CFR 57.20032 | Underground metal and nonmetal mines | 2 |
| 30 CFR 48.31 | Training of miners | 2 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 2 |
Injury and illness cases at Fort Calhoun Underground Mine
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 6 |
What the accident reports at Fort Calhoun Underground Mine describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Fall of roof or back | 3 |
| Slip or fall of person | 2 |
| Inundation | 1 |
| Handtools (nonpowered) | 1 |
| Handling of materials | 1 |
| Machinery | 1 |
| Fall of face/rib/pillar/side/highwall | 1 |
Equipment named in accident reports at Fort Calhoun Underground Mine
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 1 |
| Hand tools (powered) | 1 |
| Trucks | 1 |
| Pneumatic blasting agent loader | 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.