ACTIVE / OPERATOR PORTFOLIO
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MINE PORTFOLIO
2025-01-01 – 2026-10-17. Active records; production reporting is not required.
Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Berkeley Plant4602805 · Active | Morgan, WVSurface · MSHA: Ground Silica | — | — | 16 | 1 | 250.3 |
| Celatom Mine3503237 · Active | Malheur, ORSurface · MSHA: Diatomaceous Earth (Diatomite) | — | — | 1 | 1 | 17.8 |
| Celatom Plant3503236 · Active | Malheur, ORFacility · MSHA: Diatomaceous Earth (Diatomite) | — | — | 3 | 1 | 37.0 |
| Clark Operations2600677 · Active | Storey, NVSurface · MSHA: Diatomaceous Earth (Diatomite) | — | — | 14 | 0 | 37.8 |
| Colado Mine2600672 · Active | Pershing, NVSurface · MSHA: Diatomaceous Earth (Diatomite) | — | — | 4 | 1 | 32.5 |
| Colado Plant2600680 · Active | Pershing, NVSurface · MSHA: Diatomaceous Earth (Diatomite) | — | — | 18 | 2 | 71.5 |
| COLUMBIA PLANT3800138 · Active | Lexington, SCSurface · MSHA: Sand, Industrial NEC | — | — | 64 | 0 | 256.5 |
| Dubberly Plant1600489 · Active | Webster, LASurface · MSHA: Construction Sand and Gravel | — | — | 4 | 0 | 50.5 |
| EP Engineered Clays Corporation2200415 · Active | Hinds, MSFacility · MSHA: Clay, Ceramic, Refractory Mnls. | — | — | 11 | 2 | 69.0 |
| Fernley Operations2601950 · Active | Churchill, NVSurface · MSHA: Diatomaceous Earth (Diatomite) | — | — | 9 | 0 | 48.8 |
| FOWLKES MINE2200460 · Active | Monroe, MSSurface · MSHA: Bentonite | — | — | 1 | 0 | 40.0 |
| Hurtsboro Plant0100617 · Active | Russell, ALSurface · MSHA: Construction Sand and Gravel | — | — | 5 | 0 | 45.5 |
| Jackson Plant4002937 · Active | Madison, TNFacility · MSHA: Sand, Industrial NEC | — | — | 0 | 0 | 35.3 |
| Mapleton Depot Plant3603122 · Active | Huntingdon, PASurface · MSHA: Sand, Industrial NEC | — | — | 8 | 2 | 136.5 |
| Mauricetown Plant2800526 · Active | Cumberland, NJSurface · MSHA: Sand, Industrial NEC | — | — | 6 | 1 | 33.3 |
| Middleton Operations4002968 · Active | Hardeman, TNSurface · MSHA: Common Clays NEC | — | — | 0 | 0 | 51.8 |
| Mill Creek Plant #373400377 · Active | Johnston, OKSurface · MSHA: Sand, Industrial NEC | — | — | 4 | 0 | 29.3 |
| Mill Creek Plant #393400836 · Active | Johnston, OKSurface · MSHA: Crushed, Broken Sandstone | — | — | 14 | 3 | 58.0 |
| Millen Plant0901232 · Active | Jenkins, GAFacility · MSHA: Kaolin and Ball Clay | — | — | 1 | 0 | 37.8 |
| Montpelier Plant4402829 · Active | Hanover, VASurface · MSHA: Aplite | — | — | 5 | 0 | 97.5 |
| Ottawa Plant1101013 · Active | La Salle, ILSurface · MSHA: Ground Silica | — | — | 77 | 4 | 261.3 |
| Pacific Plant2300544 · Active | St Louis, MOSurface · MSHA: Quartz, Ground | — | — | 11 | 1 | 86.3 |
| Port Elizabeth Plant2800510 · Active | Cumberland, NJSurface · MSHA: Construction Sand and Gravel | — | — | 1 | 0 | 12.5 |
| Rockwood Plant2000608 · Active | Wayne, MISurface · MSHA: Sand, Industrial NEC | — | — | 10 | 0 | 81.5 |
Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.
LOCATION
24 of 24 mines with usable MSHA coordinates. Select a marker to open a mine.
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-17. All 24 mines listed under this operator were checked; 0 have reports in the available quarters. Totals use current ownership.
reported short tons
reported employee hours
production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | — | — | — | — | No report |
| 2025 Q2 | — | — | — | — | No report |
| 2025 Q3 | — | — | — | — | No report |
| 2025 Q4 | — | — | — | — | No report |
| 2026 Q1 | — | — | — | — | No report |
| 2026 Q2 | — | — | — | — | No report |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
2025-01-01 – 2026-10-17
38 significant & substantial (S&S)
0 records classified as fatality
275 of 287 violations with amounts
161 inspections · 161 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 56 | 8 | 21,687.00 | 2 | 0 | 27 | 342.0 |
| 2025-Q2 | 26 | 3 | 8,239.00 | 2 | 0 | 21 | 286.5 |
| 2025-Q3 | 49 | 4 | 29,813.00 | 2 | 0 | 23 | 248.8 |
| 2025-Q4 | 43 | 8 | 25,798.00 | 3 | 0 | 23 | 276.5 |
| 2026-Q1 | 35 | 5 | 7,971.00 | 5 | 0 | 19 | 249.0 |
| 2026-Q2 | 43 | 4 | 11,291.00 | 2 | 0 | 22 | 261.3 |
| 2026-Q3 | 35 | 6 | 7,209.00 | 3 | 0 | 24 | 206.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 2 | 7.0 |
All violations issued in the selected period. Counts combine subsections.
Regular Safety and Health Inspection · 7.0 on-site hours
Compliance Follow-up Inspection · 0.0 on-site hours
Compliance Follow-up Inspection · 0.0 on-site hours
Spot Inspection · 6.0 on-site hours
Spot Inspection · 13.3 on-site hours
Verbal Hazard Complaint Inspections · 2.3 on-site hours
Spot Inspection · 2.0 on-site hours
56.20003(a) · S&S
56.20003(a)
56.12032
56.14112
Regular Safety and Health Inspection · 18.5 on-site hours
56.11003
Regular Safety and Health Inspection · 7.8 on-site hours
56.14100(b) · S&S · $883.00 proposed
56.14100(b) · $177.00 proposed
56.14112(a)(1) · $151.00 proposed
56.14205 · S&S · $883.00 proposed
Regular Safety and Health Inspection · 13.8 on-site hours
Special Emphasis Programs · 0.8 on-site hours
56.12028 · $151.00 proposed
56.12008 · $592.00 proposed
Regular Safety and Health Inspection · 19.3 on-site hours
Impoundment Spot Inspection · 2.8 on-site hours
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
The employee was in the quarry with a 2-gallon jug of def in their hand, they went to turn around and immediately felt a pain in their right knee. Employee has received restrictions for their right knee.
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-17.
Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.
Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.
S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.
Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.
Portfolio totals use current mine membership, including events before the current owner or operator's tenure.
CFR headings link to the current Title 30 index; they are not historical legal determinations.
SELECTED PORTFOLIO
Relationships reflect the selected mine status and current MSHA controller/operator fields.