Data / Mines / Oklahoma / Mill Creek Dolomite
Mill Creek Dolomite: 85 MSHA citations
Updated November 6, 2026. Source: US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets.
Mill Creek Dolomite is an active crushed, broken limestone surface mine in Johnston County, Oklahoma, operated by Mill Creek Dolomite LLC with 15 employees on MSHA's record (mine ID 3400008). Since January 1, 2022 MSHA inspectors issued 85 citations and orders there with $68,564 in proposed penalties, and 3 accident reports were filed there, with 2 injury or illness cases.
The request: Watch Mill Creek Dolomite (MSHA mine ID 3400008) in Johnston County, Oklahoma: each new citation and each accident report. $10 of work on sign-up, no card.
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- MSHA mine ID
- 3400008
- Status
- Active since March 18, 1972
- Main commodity
- Crushed, broken limestone
- Mine type
- Surface
- County
- Johnston County, Oklahoma
- Nearest town
- Mill Creek
- Operator
- Mill Creek Dolomite LLC
- Parent company
- United States Lime & Minerals Inc
- Employees
- 15
- MSHA field office
- Norman Ok Field Office
- Citations and orders since January 1, 2022
- 85
- Significant and substantial
- 21 (24.7%)
- Closure orders
- 1
- High negligence or reckless
- 1
- Proposed penalties
- $68,564
- Amount paid so far
- $67,943
- Inspections
- 16
- Inspector hours on site
- 155
- Citations per inspection
- 5.31 (all mines 2.30)
- Accident reports
- 3
- Injury and illness cases
- 2
- Fatalities
- 0
- Latest MSHA record
- April 14, 2026
- Citations issued to contractors here
- 2 ($266 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 | 8 | 1 | $8,515 | 0 |
| 2023 | 12 | 7 | $4,240 | 0 |
| 2024 | 31 | 5 | $20,804 | 0 |
| 2025 | 18 | 3 | $26,785 | 2 |
| 2026 | 16 | 5 | $8,220 | 0 |
Standards cited most at Mill Creek Dolomite
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 56.20003 | Surface metal and nonmetal mines | 18 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 12 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.4101 | Surface metal and nonmetal mines | 3 |
| 30 CFR 47.41 | Hazard communication | 3 |
| 30 CFR 56.11012 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 3 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.16006 | Surface metal and nonmetal mines | 2 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 2 |
| 30 CFR 56.14130 | Surface metal and nonmetal mines | 2 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 2 |
Injury and illness cases at Mill Creek Dolomite
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| No lost time, or an occupational illness | 2 |
What the accident reports at Mill Creek Dolomite describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Machinery | 1 |
| Fire | 1 |
| Handling of materials | 1 |
Equipment named in accident reports at Mill Creek Dolomite
| Equipment | Reports |
|---|---|
| Crusher | 1 |
| Conveyor | 1 |
Other open mines in Johnston County, Oklahoma
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Mill Creek Quarry | P&K Stone LLC | Johnston County, OK | Crushed, broken granite | 20 | 55 |
| Mill Creek Limestone Quarry | Martin Marietta Materials Southwest, LLC | Johnston County, OK | Crushed, broken limestone | 60 | 30 |
| Mill Creek Plant #39 | U.S. Silica Company, LLC | Johnston County, OK | Crushed, broken sandstone | 49 | 24 |
| Mill Creek Quarry | Heidelberg Materials Southwest LLC | Johnston County, OK | Dimension limestone | 5 | 17 |
| Amrize Coleman Quarry | Amrize South Central Inc. | Johnston County, OK | Crushed, broken limestone | 7 | 14 |
| North Troy | Vulcan Construction Materials, LLC | Johnston County, OK | Crushed, broken limestone | 55 | 11 |
| Mill Creek Plant #37 | U.S. Silica Company, LLC | Johnston County, OK | Sand, industrial | 23 | 8 |
| Mill Creek | Martin Marietta Materials, Inc. | Johnston County, OK | Crushed, broken granite | 43 | 5 |
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.