Coal production
0reported short tons
ALL STATUSES / OPERATOR PORTFOLIO
County Materials Corp
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR ID0059924
MINE PORTFOLIO
8 of 8 mines and facilities
2025-01-01 – 2026-10-13. All statuses 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 |
|---|---|---|---|---|---|---|
| Custer4700825 · Intermittent6/8 quarters reported | Portage, WISurface · MSHA: Construction Sand and Gravel | 0 | 6,759 | 0 | 0 | 8.0 |
| Custer Agg Eater4703453 · Intermittent6/8 quarters reported | Portage, WISurface · MSHA: Construction Sand and Gravel | 0 | 752 | 1 | 0 | 7.5 |
| Custer Sand Screener4703832 · Intermittent6/8 quarters reported | Portage, WISurface · MSHA: Construction Sand and Gravel | 0 | 1,171 | 0 | 0 | 6.0 |
| Marathon Crushing Spread4703323 · Intermittent6/8 quarters reported | Marathon, WISurface · MSHA: Construction Sand and Gravel | 0 | 4,597 | 1 | 0 | 13.0 |
| Marathon Sand Screener4703633 · Intermittent6/8 quarters reported | Marathon, WISurface · MSHA: Construction Sand and Gravel | 0 | 724 | 2 | 0 | 6.0 |
| Marathon Wash Plant4701551 · Intermittent6/8 quarters reported | Marathon, WISurface · MSHA: Construction Sand and Gravel | 0 | 1,688 | 1 | 0 | 7.8 |
| Weston Wash Plant4702824 · Intermittent6/8 quarters reported | Marathon, WISurface · MSHA: Construction Sand and Gravel | 0 | 3,756 | 0 | 0 | 11.8 |
| Trempealeau Wash Plant4703267 · Abandoned | Trempealeau, WISurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
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
8 of 8 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Custer44.50472, -89.41139Open map ↗
- Custer Agg Eater44.50472, -89.41139Open map ↗
- Custer Sand Screener44.50389, -89.41333Open map ↗
- Marathon Crushing Spread44.94028, -89.85444Open map ↗
- Marathon Sand Screener45.46611, -89.73361Open map ↗
- Marathon Wash Plant44.93386, -89.83022Open map ↗
- Weston Wash Plant44.89667, -89.49694Open map ↗
- Trempealeau Wash Plant44.01306, -91.40722Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 8 mines listed under this operator were checked; 7 have reports in the available quarters. Totals use current ownership.
Hours worked
19,447reported 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 | 264 | 0.00 | 1 | 7/7 mines reporting |
| 2025 Q2 | 0 | 3,017 | 0.00 | 13 | 7/7 mines reporting |
| 2025 Q3 | 0 | 6,742 | 0.00 | 14 | 7/7 mines reporting |
| 2025 Q4 | 0 | 4,284 | 0.00 | 15 | 7/7 mines reporting |
| 2026 Q1 | 0 | 311 | 0.00 | 1 | 7/7 mines reporting |
| 2026 Q2 | 0 | 4,829 | 0.00 | 11 | 7/7 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
50 significant & substantial (S&S)
Accident records
00 records classified as fatality
Proposed penalties · USD
604.004 of 5 violations with amounts
On-site inspection hours
60.0013 inspections · 13 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 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 1 | 3.0 |
| 2025-Q3 | 0 | 0 | — | 0 | 0 | 4 | 15.5 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q1 | 2 | 0 | 302.00 | 0 | 0 | 1 | 5.0 |
| 2026-Q2 | 1 | 0 | 151.00 | 0 | 0 | 2 | 17.3 |
| 2026-Q3 | 2 | 0 | 151.00 | 0 | 0 | 5 | 19.3 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Custer Agg Eater · 4703453
Regular Safety and Health Inspection · 4.5 on-site hours
- Custer Agg Eater · 4703453
56.11003
- Custer · 4700825
Regular Safety and Health Inspection · 3.5 on-site hours
- Custer Agg Eater · 4703453
Mine Idle Activity · 0.5 on-site hours
- Custer Sand Screener · 4703832
Regular Safety and Health Inspection · 3.0 on-site hours
- Marathon Wash Plant · 4701551
Regular Safety and Health Inspection · 7.8 on-site hours
- Marathon Wash Plant · 4701551
56.12004 · $151.00 proposed
- Marathon Crushing Spread · 4703323
Regular Safety and Health Inspection · 5.5 on-site hours
- Marathon Crushing Spread · 4703323
56.12008 · $151.00 proposed
- Weston Wash Plant · 4702824
Regular Safety and Health Inspection · 11.8 on-site hours
- Marathon Sand Screener · 4703633
Regular Safety and Health Inspection · 5.0 on-site hours
- Marathon Sand Screener · 4703633
56.12028 · $151.00 proposed
- Marathon Sand Screener · 4703633
56.4201(a)(1) · $151.00 proposed
- Custer · 4700825
Spot Inspection · 4.5 on-site hours
- Custer Agg Eater · 4703453
Regular Safety and Health Inspection · 2.5 on-site hours
- Marathon Crushing Spread · 4703323
Regular Safety and Health Inspection · 7.5 on-site hours
- Marathon Sand Screener · 4703633
Mine Idle Activity · 1.0 on-site hours
- Custer Sand Screener · 4703832
Regular Safety and Health Inspection · 3.0 on-site hours
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.