Coal production
0reported short tons
ACTIVE / OPERATOR PORTFOLIO
Buzzi Unicem USA
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDL17977
MINE PORTFOLIO
4 of 4 mines and facilities
2025-01-01 – 2026-10-18. 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 |
|---|---|---|---|---|---|---|
| Lone Star Industries1200064 · Active6/8 quarters reported | Putnam, INFacility · MSHA: Cement | 0 | 616,921 | 51 | 11 | 276.0 |
| LONE STAR PRYOR PLT MILL & QY3401289 · Active6/8 quarters reported | Mayes, OKSurface · MSHA: Cement | 0 | 393,442 | 101 | 13 | 212.8 |
| Lone Star Quarry & Mill2300134 · Active6/8 quarters reported | Cape Girardeau, MOSurface · MSHA: Cement | 0 | 629,593 | 42 | 6 | 258.5 |
| MARYNEAL QUARRY AND MILL4100283 · Active6/8 quarters reported | Nolan, TXFacility · MSHA: Cement | 0 | 446,802 | 342 | 4 | 559.8 |
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
Portfolio map
4 of 4 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Lone Star Industries39.61167, -86.87889Open map ↗
- LONE STAR PRYOR PLT MILL & QY35.98694, -95.28111Open map ↗
- Lone Star Quarry & Mill37.31944, -89.53806Open map ↗
- MARYNEAL QUARRY AND MILL32.21194, -100.50722Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 4 mines listed under this operator were checked; 4 have reports in the available quarters. Totals use current ownership.
Hours worked
2,086,758reported employee hours
Tons per hour
0.00production ÷ 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.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 376,932 | 0.00 | 665 | 4/4 mines reporting |
| 2025 Q2 | 0 | 342,545 | 0.00 | 658 | 4/4 mines reporting |
| 2025 Q3 | 0 | 349,126 | 0.00 | 654 | 4/4 mines reporting |
| 2025 Q4 | 0 | 336,905 | 0.00 | 653 | 4/4 mines reporting |
| 2026 Q1 | 0 | 340,812 | 0.00 | 634 | 4/4 mines reporting |
| 2026 Q2 | 0 | 340,438 | 0.00 | 629 | 4/4 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
536121 significant & substantial (S&S)
Accident records
340 records classified as fatality
Proposed penalties · USD
1,043,286.00528 of 536 violations with amounts
On-site inspection hours
1,307.0067 inspections · 67 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.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 78 | 19 | 184,792.00 | 5 | 0 | 9 | 185.8 |
| 2025-Q2 | 129 | 34 | 281,481.00 | 7 | 0 | 14 | 379.0 |
| 2025-Q3 | 22 | 9 | 21,341.00 | 3 | 0 | 9 | 42.5 |
| 2025-Q4 | 78 | 9 | 276,172.00 | 4 | 0 | 6 | 180.8 |
| 2026-Q1 | 12 | 4 | 16,548.00 | 6 | 0 | 7 | 83.5 |
| 2026-Q2 | 204 | 41 | 258,708.00 | 3 | 0 | 13 | 367.3 |
| 2026-Q3 | 9 | 2 | 4,244.00 | 6 | 0 | 6 | 55.8 |
| 2026-Q4 * | 4 | 3 | — | 0 | 0 | 3 | 12.5 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- MARYNEAL QUARRY AND MILL · 4100283
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee removed lid from manhole to pump out water from scales. While waiting on water removal process to be completed, EE picked up an air hose and began walking backwards to remove slack from the hose and stepped into the manhole causing employee to partially fall into opening striking lower back
- Lone Star Quarry & Mill · 2300134
56.12008 · $151.00 proposed
- Lone Star Quarry & Mill · 2300134
56.12030 · S&S · $1,818.00 proposed
- Lone Star Quarry & Mill · 2300134
56.12004 · S&S · $2,312.00 proposed
- Lone Star Quarry & Mill · 2300134
56.14112(a)(1) · $151.00 proposed
- Lone Star Quarry & Mill · 2300134
56.12028 · $151.00 proposed
- Lone Star Quarry & Mill · 2300134
56.12008 · $151.00 proposed
- Lone Star Quarry & Mill · 2300134
56.12002 · $267.00 proposed
- Lone Star Quarry & Mill · 2300134
56.20003(a) · $1,431.00 proposed
- Lone Star Quarry & Mill · 2300134
Regular Safety and Health Inspection · 68.8 on-site hours
- Lone Star Quarry & Mill · 2300134
56.20003(a) · $1,431.00 proposed
- Lone Star Industries · 1200064
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While removing slide above screw conveyor material inside the hopper moved and dust came out of the gap left from the slide removal and got into employees eyes
- Lone Star Quarry & Mill · 2300134
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
On February 4, 2026, an ACME field employee reported to EE's foreman that EE's right forearm felt strained but did not believe medical attention was needed. EE later requested medical attention, stating EE's forearm began hurting after using an air hammer for two hours removing excess concrete.
- Lone Star Industries · 1200064
Spot Inspection · 3.0 on-site hours
- Lone Star Industries · 1200064
Verbal Hazard Complaint Inspections · 5.0 on-site hours
- Lone Star Industries · 1200064
56.12004 · $177.00 proposed
- Lone Star Industries · 1200064
56.20003(b) · S&S · $1,968.00 proposed
- Lone Star Industries · 1200064
56.12030 · S&S · $6,540.00 proposed
- Lone Star Industries · 1200064
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While moving a long handled scraper the handle hit a beam overhead that dropped dust on top of employee and EE got some in EE's left eye
- Lone Star Industries · 1200064
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While removing buckets from a bucket elevator employee got something in their eye. Eye doctor removed and prescribed antibiotic eye drops
- LONE STAR PRYOR PLT MILL & QY · 3401289
103 (g) Written Notification Hazard Complaint Inspectio · 1.5 on-site hours
- MARYNEAL QUARRY AND MILL · 4100283
Verbal Hazard Complaint Inspections · 1.0 on-site hours
- Lone Star Quarry & Mill · 2300134
OTHER · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was working near the doorway at the alkali spray tower dump box when wind blew dust under EE's safety glasses. This caused EE's left eye to become irritated. This did not become reportable until the employee went to the doctor on 1/9/2026, when the doctor prescribed eyedrops.
- LONE STAR PRYOR PLT MILL & QY · 3401289
Compliance Follow-up Inspection · 1.3 on-site hours
- LONE STAR PRYOR PLT MILL & QY · 3401289
56.14100(b) · $209.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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
1 linked controller.
Relationships reflect the selected mine status and current MSHA controller/operator fields.