Coal production
0reported short tons
ALL STATUSES / CONTROLLER PORTFOLIO
Manatts Enterprises; Cedar Valley Corp
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM04838
MINE PORTFOLIO
29 of 29 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 |
|---|---|---|---|---|---|---|
| Fertile Sand, Shop & Wash Plant1301701 · Active6/8 quarters reported | Worth, IASurface · MSHA: Construction Sand and Gravel | 0 | 35,563 | 1 | 0 | 19.3 |
| Gilbertville Sand1300686 · Active6/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 20,643 | 4 | 0 | 28.5 |
| Portable Crushing Plant #2011301415 · Active6/8 quarters reported | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 24,566 | 5 | 1 | 27.0 |
| PORTABLE CRUSHING PLANT #2021302112 · Active6/8 quarters reported | Fayette, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 22,666 | 3 | 1 | 25.0 |
| Portable Crushing Plant #2031302111 · Active6/8 quarters reported | Fayette, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 29,127 | 2 | 0 | 14.5 |
| PORTABLE CRUSHING PLANT #2041302113 · Intermittent6/8 quarters reported | Fayette, IASurface · MSHA: Construction Sand and Gravel | 0 | 24,193 | 0 | 1 | 14.8 |
| Portable Crushing Plant #2051302076 · Intermittent6/8 quarters reported | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 27,013 | 6 | 1 | 10.8 |
| Portable Rock Washing Plant #404 / 4051302115 · Intermittent6/8 quarters reported | Fayette, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 10,164 | 1 | 0 | 16.5 |
| Portable Sand Plant #1051302204 · Intermittent6/8 quarters reported | Cerro Gordo, IASurface · MSHA: Construction Sand and Gravel | 0 | 5,618 | 2 | 0 | 16.3 |
| PORTABLE SAND PLANT #5011302117 · Intermittent6/8 quarters reported | Bremer, IASurface · MSHA: Construction Sand and Gravel | 0 | 7,463 | 2 | 0 | 13.5 |
| Portable Wash/Crushing Plant1302077 · Intermittent6/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 3,440 | 1 | 0 | 10.3 |
| Raymond Shop & Wash Plant1302337 · Active6/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 20,289 | 7 | 0 | 20.5 |
| Stripping Crew1302116 · Active6/8 quarters reported | Fayette, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 18,187 | 4 | 1 | 22.5 |
| Waterloo Sand1300725 · Active6/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 11,738 | 4 | 0 | 29.0 |
| Waterloo South Quarry1302173 · Active6/8 quarters reported | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 30,579 | 8 | 0 | 44.5 |
| Andrews Quarry1301843 · Abandoned | Hancock, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Craft Sand1302053 · Abandoned | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Fertile Quarry1300127 · Abandoned | Worth, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Frederika Quarry1300117 · Abandoned | Bremer, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Garner Quarry1300119 · Abandoned | Hancock, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| La Porte City Sand1302041 · Abandoned | Black Hawk, IAFacility · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Morgan Quarry1301231 · Abandoned | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Portable Quarry #11302175 · Abandoned | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Portable Rock Drill #3151302198 · Abandoned4/8 quarters reported | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 995 | 0 | 0 | 4.8 |
| Portable Rock Drill #3161302170 · Abandoned4/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 1,313 | 0 | 0 | 3.0 |
| Portable Rock Drill #3171301109 · Abandoned4/8 quarters reported | Black Hawk, IASurface · MSHA: Construction Sand and Gravel | 0 | 997 | 1 | 0 | 9.5 |
| Waterloo South Mine1301926 · Abandoned | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Widger Quarry1302015 · Abandoned | Buchanan, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 0 | 0 | — |
| Yokom Quarry1300115 · Abandoned | Black Hawk, IASurface · MSHA: Crushed, Broken Limestone NEC | — | — | 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
18 of 29 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Fertile Sand, Shop & Wash Plant43.26389, -93.38861Open map ↗
- Gilbertville Sand42.44972, -92.23556Open map ↗
- Portable Crushing Plant #20142.46806, -92.25778Open map ↗
- PORTABLE CRUSHING PLANT #20242.46806, -91.78833Open map ↗
- Portable Crushing Plant #20342.84750, -92.07306Open map ↗
- PORTABLE CRUSHING PLANT #20442.46806, -92.25778Open map ↗
- Portable Crushing Plant #20542.46333, -92.24639Open map ↗
- Portable Rock Washing Plant #404 / 40542.84750, -92.07306Open map ↗
- Portable Sand Plant #10543.17667, -93.20972Open map ↗
- PORTABLE SAND PLANT #50142.84750, -92.07306Open map ↗
- Portable Wash/Crushing Plant42.45694, -92.07306Open map ↗
- Raymond Shop & Wash Plant42.46889, -92.20167Open map ↗
- Stripping Crew42.84750, -92.07306Open map ↗
- Waterloo Sand42.53194, -92.37722Open map ↗
- Waterloo South Quarry42.35111, -92.29861Open map ↗
- Portable Rock Drill #31542.46333, -92.24639Open map ↗
- Portable Rock Drill #31642.46889, -92.20167Open map ↗
- Portable Rock Drill #31742.84750, -92.07306Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 29 mines listed under this controller were checked; 18 have reports in the available quarters. Totals use current ownership.
Hours worked
294,554reported 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 | 32,386 | 0.00 | 108 | 18/18 mines reporting |
| 2025 Q2 | 0 | 58,645 | 0.00 | 113 | 18/18 mines reporting |
| 2025 Q3 | 0 | 55,501 | 0.00 | 109 | 18/18 mines reporting |
| 2025 Q4 | 0 | 49,469 | 0.00 | 100 | 18/18 mines reporting |
| 2026 Q1 | 0 | 37,630 | 0.00 | 103 | 15/18 mines reporting |
| 2026 Q2 | 0 | 60,923 | 0.00 | 107 | 15/18 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
514 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
8,835.0051 of 51 violations with amounts
On-site inspection hours
330.0054 inspections · 54 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 | 4 | 0 | 604.00 | 0 | 0 | 9 | 40.3 |
| 2025-Q2 | 4 | 0 | 604.00 | 1 | 0 | 10 | 50.3 |
| 2025-Q3 | 3 | 1 | 806.00 | 1 | 0 | 4 | 36.5 |
| 2025-Q4 | 21 | 1 | 3,541.00 | 1 | 0 | 9 | 55.5 |
| 2026-Q1 | 0 | 0 | — | 1 | 0 | 3 | 13.8 |
| 2026-Q2 | 19 | 2 | 3,280.00 | 1 | 0 | 15 | 105.0 |
| 2026-Q3 | 0 | 0 | — | 0 | 0 | 4 | 28.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Waterloo Sand · 1300725
Spot Inspection · 10.5 on-site hours
- PORTABLE CRUSHING PLANT #204 · 1302113
Spot Inspection · 11.5 on-site hours
- Stripping Crew · 1302116
Spot Inspection · 5.0 on-site hours
- Portable Wash/Crushing Plant · 1302077
Mine Idle Activity · 1.8 on-site hours
- Waterloo Sand · 1300725
Compliance Follow-up Inspection · 1.0 on-site hours
- PORTABLE CRUSHING PLANT #202 · 1302112
Regular Safety and Health Inspection · 9.3 on-site hours
- Portable Rock Washing Plant #404 / 405 · 1302115
Spot Inspection · 1.0 on-site hours
- PORTABLE CRUSHING PLANT #202 · 1302112
56.12032 · $151.00 proposed
- Waterloo Sand · 1300725
Compliance Follow-up Inspection · 4.3 on-site hours
- Portable Crushing Plant #203 · 1302111
Regular Safety and Health Inspection · 9.5 on-site hours
- Portable Crushing Plant #203 · 1302111
56.12032 · $151.00 proposed
- Portable Crushing Plant #203 · 1302111
56.14132(a) · $151.00 proposed
- Waterloo South Quarry · 1302173
56.14100(c) · $151.00 proposed
- Waterloo South Quarry · 1302173
56.12004 · $151.00 proposed
- Waterloo South Quarry · 1302173
Regular Safety and Health Inspection · 12.8 on-site hours
- Waterloo South Quarry · 1302173
56.12018 · $151.00 proposed
- Portable Crushing Plant #201 · 1301415
Regular Safety and Health Inspection · 16.3 on-site hours
- Raymond Shop & Wash Plant · 1302337
Regular Safety and Health Inspection · 4.0 on-site hours
- Waterloo Sand · 1300725
56.12013 · $151.00 proposed
- Waterloo Sand · 1300725
56.12004 · $151.00 proposed
- Raymond Shop & Wash Plant · 1302337
56.4201(a)(1) · $151.00 proposed
- Waterloo Sand · 1300725
Regular Safety and Health Inspection · 6.8 on-site hours
- Gilbertville Sand · 1300686
Regular Safety and Health Inspection · 7.5 on-site hours
- Gilbertville Sand · 1300686
56.14107(a) · $151.00 proposed
- Portable Rock Washing Plant #404 / 405 · 1302115
Regular Safety and Health Inspection · 7.3 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
2 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.