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
- Lone Star Industries · 1200064
103 (g) Written Notification Hazard Complaint Inspectio · 4.0 on-site hours
- Lone Star Industries · 1200064
56.12028 · $2,503.00 proposed
- Lone Star Industries · 1200064
56.20003(a) · $883.00 proposed
- Lone Star Industries · 1200064
Regular Safety and Health Inspection · 57.8 on-site hours
- Lone Star Industries · 1200064
47.54(a) · $226.00 proposed
- Lone Star Industries · 1200064
47.41(a) · $226.00 proposed
- Lone Star Industries · 1200064
46.7(a) · S&S · $1,126.00 proposed
- Lone Star Industries · 1200064
56.4401 · $226.00 proposed
- Lone Star Industries · 1200064
56.12028 · $2,503.00 proposed
- Lone Star Industries · 1200064
SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Stepped off of forklift onto uneven ground causing a minor fracture to left foot injured employee is on restricted duty
- Lone Star Industries · 1200064
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While cleaning a chute with water the individual had wet high alkali material get behind EE's safety glasses and into EE's eyes causing minor chemical burns
- Lone Star Quarry & Mill · 2300134
Spot Inspection · 8.0 on-site hours
- Lone Star Industries · 1200064
FALLING/SLIDING/ROLLING MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While inspecting a port on the tower the employee got hot dust in their face causing an eye abrasion and 2nd degree burns to face.
- MARYNEAL QUARRY AND MILL · 4100283
Spot Inspection · 21.0 on-site hours
- LONE STAR PRYOR PLT MILL & QY · 3401289
Spot Inspection · 4.0 on-site hours
- LONE STAR PRYOR PLT MILL & QY · 3401289
56.4201(a)(1) · $151.00 proposed
- LONE STAR PRYOR PLT MILL & QY · 3401289
56.20003(a) · $193.00 proposed
- LONE STAR PRYOR PLT MILL & QY · 3401289
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
The employee was using a knife to cut a hose (not the company approved safety blade). While cutting the hose the employee cut EE's left forearm.
- LONE STAR PRYOR PLT MILL & QY · 3401289
SLIP OR FALL OF PERSON · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While the employee was climbing down a fixed ladder EE slipped on the 3rd rung from the bottom and landed awkwardly on EE's left ankle.
- Lone Star Industries · 1200064
Verbal Hazard Complaint Inspections · 1.3 on-site hours
- Lone Star Industries · 1200064
103 (g) Written Notification Hazard Complaint Inspectio · 3.8 on-site hours
- Lone Star Industries · 1200064
56.9300(a) · S&S · $1,968.00 proposed
- Lone Star Industries · 1200064
56.9300(a) · S&S · $2,936.00 proposed
- LONE STAR PRYOR PLT MILL & QY · 3401289
Spot Inspection · 0.0 on-site hours
- LONE STAR PRYOR PLT MILL & QY · 3401289
50.20(a) · $151.00 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.