Lime mines in the US: 73 open mines and MSHA citations
MSHA lists 73 open lime mines in the US, run by 47 operators and employing 3,400 people. Since January 1, 2022 its inspectors issued 4,761 citations and orders there with $3,056,711 in proposed penalties, and operators reported 429 injury or illness cases, 3 of them fatal. The operators with the most open mines are Martin Marietta Materials, Inc.; MLC; Carmeuse Lime & Stone Inc. Data from MSHA, November 6, 2026.
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- Open mines
- 73
- Operators
- 47
- Employees
- 3,400
- Active
- 63
- Intermittent
- 7
- Temporarily Idled
- 3
- Mines run by individuals, counted and not listed
- 2
- Citations and orders since January 1, 2022
- 4,761
- Significant and substantial
- 731 (15.4%)
- Closure orders
- 57
- High negligence or reckless
- 170
- Proposed penalties
- $3,056,711
- Amount paid so far
- $2,551,563
- Inspections
- 1,135
- Inspector hours on site
- 26,973
- Citations per inspection
- 4.19 (all mines 2.30)
- Accident reports
- 450
- Injury and illness cases
- 429
- Fatalities
- 3
- Latest MSHA record
- November 5, 2026
Operators with the most open mines
Ranked by open mines, then by citations. Sole proprietors and individuals are not listed.
Operators with the most citations
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.
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| MLC, Ste. Genevieve | MLC | Ste Genevieve County, MO | Lime | 586 | 749 |
| Buffington Plant | Carmeuse Lime & Stone Inc | Lake County, IN | Lime | 52 | 451 |
| Graymont (PA) Inc. Pleasant Gap | Graymont (Pa) Inc | Centre County, PA | Lime | 147 | 385 |
| Cricket Mountain Plant & Quarry | Graymont Western US Inc | Millard County, UT | Lime | 74 | 163 |
| Verpol Plant | Omya Inc | Rutland County, VT | Lime | 120 | 162 |
| Rapid City Quarry & Mill | Colorado Lien Company | Pennington County, SD | Lime | 109 | 149 |
| Martin Marietta, Woodville Lime & Stone | Martin Marietta Materials, Inc. | Sandusky County, OH | Lime | 116 | 145 |
| U.S. Lime Company-St. Clair | U.S. Lime Company-St. Clair | Sequoyah County, OK | Lime | 36 | 126 |
| Plant & Quarry | Texas Lime Company | Johnson County, TX | Lime | 94 | 125 |
| Graymont Dolime (OH) Inc. | Graymont Dolime (Oh) Inc | Ottawa County, OH | Lime | 54 | 124 |
| Linwood Lime Plant | Linwood Mining and Minerals Corporation | Scott County, IA | Lime | 38 | 116 |
| Apex Quarry and Plant | Martin Marietta Materials, Inc. | Clark County, NV | Lime | 115 | 103 |
| New Braunfels Plant | Martin Marietta Materials, Inc. | Comal County, TX | Lime | 83 | 83 |
| Manitowoc Plant | Carmeuse Lime & Stone Inc | Manitowoc County, WI | Lime | 26 | 83 |
| York Plant | Magnesita Refractories Company | York County, PA | Lime | 84 | 77 |
| DBA: Greer Lime Company | Greer Industries Inc | Pendleton County, WV | Lime | 75 | 76 |
| Best Lime Manufacturing | Best Lime Manufacturing | Shannon County, MO | Lime | 3 | 74 |
| Graymont Superior Lime Plant | Graymont (WI) LLC | Douglas County, WI | Lime | 41 | 73 |
| Marble Falls Plant | Martin Marietta Materials, Inc. | Burnet County, TX | Lime | 15 | 70 |
| Nelson Quarry & Plant | Martin Marietta Materials, Inc. | Coconino County, AZ | Lime | 84 | 67 |
| Limedale Plant | Arkansas Lime Company | Independence County, AR | Lime | 39 | 67 |
| Maple Grove Operations | Carmeuse Lime Inc | Seneca County, OH | Lime | 40 | 65 |
| Pilot Peak | Graymont Western US Inc | Elko County, NV | Lime | 74 | 64 |
| Clifton Plant | Martin Marietta Materials, Inc. | Bosque County, TX | Lime | 70 | 63 |
| Montevallo Quarry & Mill | Martin Marietta Materials, Inc. | Shelby County, AL | Lime | 84 | 62 |
| O'Neal Quarry & Mill | Martin Marietta Materials, Inc. | Shelby County, AL | Lime | 108 | 58 |
| MLC, Calera | MLC | Shelby County, AL | Lime | 50 | 57 |
| PJM Rock Mine & Aggregates, LLC | PJM Rock Mine & Aggregates LLC | Hendry County, FL | Lime | 3 | 52 |
| Indian Creek Lime Plant & Quarry | Graymont Western US Inc | Broadwater County, MT | Lime | 39 | 47 |
| Castlewood | Oldcastle Lawn & Garden Inc | Russell County, VA | Lime | 27 | 47 |
| Eden Quarry & Mill | Graymont Western Lime Inc. | Fond Du Lac County, WI | Lime | 42 | 45 |
| Green Bay Lime Kiln | Graymont Western Lime Inc. | Brown County, WI | Lime | 27 | 45 |
| River Rouge Facility | Carmeuse Lime & Stone Inc | Wayne County, MI | Lime | 28 | 44 |
| Martin Marietta Materials, Inc. | Martin Marietta Materials, Inc. | Ste Genevieve County, MO | Lime | 62 | 41 |
| Grand River Operation | Carmeuse Lime Inc | Lake County, OH | Lime | 35 | 39 |
| Specialty Minerals Inc. | Specialty Minerals Inc | Ste Genevieve County, MO | Lime | 1 | 38 |
| MLC, Bonne Terre | MLC | St Francois County, MO | Lime | 40 | 34 |
| Oldcastle Lawn and Garden Northeast | Oldcastle Lawn & Garden Inc | Berkshire County, MA | Lime | 32 | 32 |
| Longview Operation | Carmeuse Lime & Stone Inc | Shelby County, AL | Lime | 113 | 30 |
| Landmark Plant | Cheney Lime & Cement Company | Shelby County, AL | Lime | 33 | 30 |
| Desert Queen | Desert Queen Quarry LLC | Pinal County, AZ | Lime | 4 | 28 |
| GLC Minerals, LLC. | Great Lakes Calcium Corp. | Brown County, WI | Lime | 48 | 27 |
| Wyoming Lime Products | Colorado Lien Company | Park County, WY | Lime | 15 | 26 |
| West Carthage Mine | Cranesville Block Company Inc | Jefferson County, NY | Lime | 9 | 23 |
| MLC, Verona | MLC | Gallatin County, KY | Lime | 13 | 22 |
| Withers Pit | S & S Rock Crushing, Inc. | Clark County, KS | Lime | 3 | 22 |
| Tacoma Plant | Graymont Western US Inc | Pierce County, WA | Lime | 41 | 18 |
| Wantage Stone | Vulcan Construction Materials, LLC | Sussex County, NJ | Lime | 13 | 18 |
| Rivergate | Gilmour and Company | Multnomah County, OR | Lime | 13 | 17 |
| Center Road Quarry | K&D Stone LLC | Dane County, WI | Lime | 2 | 15 |
| Winchester Plant | Carmeuse Lime | Frederick County, VA | Lime | 101 | 14 |
| Carmeuse Lime Inc | Carmeuse Lime Inc | Lebanon County, PA | Lime | 12 | 13 |
| Beneficial Technologies | Beneficial Technologies LLC | Clinton County, IA | Lime | 3 | 13 |
| Port Inland Lime Kiln | Graymont Western Lime Inc. | Schoolcraft County, MI | Lime | 24 | 10 |
| Stockbridge Quarry | Syracuse Sand & Gravel LLC | Madison County, NY | Lime | 4 | 10 |
| Ag Lime Facility at Young Mill | Mossy Creek Mining Llc | Jefferson County, TN | Lime | 5 | 9 |
| RSP, Lime Plant | Ridge Stone Products Inc | Green Lake County, WI | Lime | 2 | 9 |
| Weaverland Quarry | New Enterprise Stone and Lime Co., Inc. | Lancaster County, PA | Lime | 6 | 8 |
| Tri-State Lime, LLC | Tri-State Lime, LLC | Early County, GA | Lime | 3 | 7 |
| Hack 1 | Heintz Excavating LLC | Winona County, MN | Lime | 3 | 7 |
| Landmark Excavating | Landmark Excavating | Winnebago County, IL | Lime | 2 | 7 |
| Kohlhoff Pitt | Lake Country Stone, LLC | Dodge County, WI | Lime | 1 | 7 |
| Portable Crusher No. 3 | Rango Inc. | Gila County, AZ | Lime | 5 | 6 |
| Strasburg Quarry | Carmeuse Lime | Shenandoah County, VA | Lime | 35 | 5 |
| Shelter Creek Lime and Stone | Shelter Creek Capital, LLC | Pender County, NC | Lime | 5 | 4 |
| Stallings Claim | S & O Ranch LLC | Hendry County, FL | Lime | 8 | 3 |
| Aragon | Vulcan Construction Materials, LLC | Polk County, GA | Lime | 14 | 0 |
| Farmer's Limestone, LLC Plant Rd Quarry | Limerock LLC | Houston County, GA | Lime | 3 | 0 |
| McCloskey R230 Screener | All Excavating & Demolition, Ltd. | Wyandot County, OH | Lime | 3 | 0 |
| Douglas Plant | Martin Marietta Materials, Inc. | Cochise County, AZ | Lime | 2 | 0 |
| Bach & Co Boulder Mine | Bach & Co | Jefferson County, NY | Lime | 1 | 0 |
States
| State | Open mines | Share |
|---|---|---|
| Wisconsin | 8 | 11% |
| Alabama | 5 | 6.8% |
| Missouri | 5 | 6.8% |
| Ohio | 5 | 6.8% |
| Arizona | 4 | 5.5% |
| Pennsylvania | 4 | 5.5% |
| Texas | 4 | 5.5% |
| Georgia | 3 | 4.1% |
| New York | 3 | 4.1% |
| Virginia | 3 | 4.1% |
| Florida | 2 | 2.7% |
| Iowa | 2 | 2.7% |
| Michigan | 2 | 2.7% |
| Nevada | 2 | 2.7% |
| Washington | 2 | 2.7% |
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 | 855 | 149 | $640,494 | 81 |
| 2023 | 1,066 | 148 | $659,625 | 93 |
| 2024 | 1,075 | 144 | $629,720 | 83 |
| 2025 | 870 | 137 | $609,109 | 89 |
| 2026 | 895 | 153 | $517,763 | 83 |
Standards cited most at lime mines
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 | 380 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 256 |
| 30 CFR 57.20003 | Underground metal and nonmetal mines | 226 |
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 216 |
| 30 CFR 56.14112 | Surface metal and nonmetal mines | 206 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 184 |
| 30 CFR 56.12032 | Surface metal and nonmetal mines | 183 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 140 |
| 30 CFR 57.12004 | Underground metal and nonmetal mines | 110 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 104 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 102 |
| 30 CFR 57.14100 | Underground metal and nonmetal mines | 94 |
| 30 CFR 56.12018 | Surface metal and nonmetal mines | 80 |
| 30 CFR 57.14112 | Underground metal and nonmetal mines | 76 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 75 |
Injury and illness cases at lime mines
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Fatality | 3 |
| Permanent disability | 5 |
| Days away from work or restricted activity | 279 |
| No lost time, or an occupational illness | 142 |
What the accident reports at lime mines describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 150 |
| Slip or fall of person | 85 |
| Handtools (nonpowered) | 53 |
| Machinery | 43 |
| Powered haulage | 37 |
| Other | 26 |
| Stepping or kneeling on object | 13 |
| Fire | 13 |
| Disorders (repeated trauma) | 8 |
| Striking or bumping | 4 |
Equipment named in accident reports at lime mines
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 53 |
| Hand tools (powered) | 24 |
| Front-end loader | 15 |
| Forklift | 11 |
| Conveyor | 11 |
| Ore haulage trucks - off highway trucks | 8 |
| Milling machinery | 8 |
| Trucks | 6 |
| Ore haulage trucks - on highway trucks | 5 |
| Machine | 5 |
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.