Coal production
0reported short tons
ACTIVE / OPERATOR PORTFOLIO
Ace Aggregates, LLC
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR ID0152773
MINE PORTFOLIO
1 of 1 mines and facilities
2025-01-01 – 2026-10-13. 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 |
|---|---|---|---|---|---|---|
| Cobey Hollow Stone- Mico4105287 · Active6/8 quarters reported | Medina, TXSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 103,988 | 5 | 2 | 36.5 |
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
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Cobey Hollow Stone- Mico29.56361, -98.83056Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 1 mines listed under this operator were checked; 1 have reports in the available quarters. Totals use current ownership.
Hours worked
103,988reported 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 | 17,004 | 0.00 | 26 | 1/1 mines reporting |
| 2025 Q2 | 0 | 17,897 | 0.00 | 24 | 1/1 mines reporting |
| 2025 Q3 | 0 | 17,346 | 0.00 | 24 | 1/1 mines reporting |
| 2025 Q4 | 0 | 16,291 | 0.00 | 24 | 1/1 mines reporting |
| 2026 Q1 | 0 | 16,766 | 0.00 | 24 | 1/1 mines reporting |
| 2026 Q2 | 0 | 18,684 | 0.00 | 23 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
52 significant & substantial (S&S)
Accident records
20 records classified as fatality
Proposed penalties · USD
8,391.005 of 5 violations with amounts
On-site inspection hours
36.507 inspections · 7 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 | 2 | 2 | 7,310.00 | 1 | 0 | 3 | 16.3 |
| 2025-Q2 | 1 | 0 | 465.00 | 0 | 0 | 1 | 9.3 |
| 2025-Q3 | 0 | 0 | — | 0 | 0 | 1 | 1.0 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q1 | 1 | 0 | 465.00 | 0 | 0 | 1 | 4.5 |
| 2026-Q2 | 1 | 0 | 151.00 | 1 | 0 | 1 | 5.5 |
| 2026-Q3 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Cobey Hollow Stone- Mico · 4105287
Regular Safety and Health Inspection · 5.5 on-site hours
- Cobey Hollow Stone- Mico · 4105287
56.12008 · $151.00 proposed
- Cobey Hollow Stone- Mico · 4105287
HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
Employee reported having back pain to EE's supervisor. EE was about to grease EE's loader, but hadn't started yet, when EE began to feel pain. EE does not know what caused it. EE was not doing anything when the pain started. Axis care line was called. Nurse advised rest, OTC pain meds, & Ice therapy. Employee was sent home at 12:40 to rest and follow nurses care plan.
- Cobey Hollow Stone- Mico · 4105287
Regular Safety and Health Inspection · 4.5 on-site hours
- Cobey Hollow Stone- Mico · 4105287
56.12032 · $465.00 proposed
- Cobey Hollow Stone- Mico · 4105287
Special Emphasis Programs · 1.0 on-site hours
- Cobey Hollow Stone- Mico · 4105287
Regular Safety and Health Inspection · 9.3 on-site hours
- Cobey Hollow Stone- Mico · 4105287
56.12008 · $465.00 proposed
- Cobey Hollow Stone- Mico · 4105287
Compliance Follow-up Inspection · 3.0 on-site hours
- Cobey Hollow Stone- Mico · 4105287
46.5(a) · S&S · $3,263.00 proposed
- Cobey Hollow Stone- Mico · 4105287
56.14100(b) · S&S · $4,047.00 proposed
- Cobey Hollow Stone- Mico · 4105287
Regular Safety and Health Inspection · 4.3 on-site hours
- Cobey Hollow Stone- Mico · 4105287
103 (g) Written Notification Hazard Complaint Inspectio · 9.0 on-site hours
- Cobey Hollow Stone- Mico · 4105287
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
EE texted Plant supervisor that the excavator operator was dropping large rocks too hard in EE's haul truck. EE did not report and injury at that time but after EE's shift EE called HR and said EE's back hurt. EE to Texas med clinic and the ER and was diagnosed with possible muscle and vertebrae injuries.
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.
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.