Coal production
0reported short tons
ALL STATUSES / OPERATOR PORTFOLIO
Strata Corp
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDL09644
MINE PORTFOLIO
21 of 21 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 |
|---|---|---|---|---|---|---|
| 218 Plant2101638 · Intermittent6/8 quarters reported | Polk, MNSurface · MSHA: Construction Sand and Gravel | 0 | 10,702 | 1 | 0 | 8.0 |
| Detroit Lakes Plant2103107 · Intermittent6/8 quarters reported | Becker, MNSurface · MSHA: Construction Sand and Gravel | 0 | 13,820 | 4 | 0 | 17.5 |
| Forester Pit2100623 · Intermittent6/8 quarters reported | Kittson, MNSurface · MSHA: Construction Sand and Gravel | 0 | 828 | 2 | 0 | 10.3 |
| Northern Sand & Gravel2100576 · Intermittent6/8 quarters reported | Polk, MNSurface · MSHA: Construction Sand and Gravel | 0 | 6,315 | 0 | 0 | 3.0 |
| Portable Crushing Plant #12102843 · Intermittent6/8 quarters reported | Polk, MNSurface · MSHA: Construction Sand and Gravel | 0 | 13,371 | 1 | 0 | 9.3 |
| Portable Plant #102103851 · Intermittent6/8 quarters reported | Clay, MNSurface · MSHA: Construction Sand and Gravel | 0 | 19 | 0 | 0 | 2.8 |
| Portable Plant #23200151 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 12,619 | 3 | 0 | 7.0 |
| Portable Plant #33200150 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 12,999 | 3 | 0 | 9.8 |
| Portable Plant #53200773 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 177 | 1 | 0 | 5.0 |
| Portable Plant #63200140 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 12,201 | 3 | 0 | 20.8 |
| Portable Plant #73200807 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 15,398 | 0 | 0 | 22.3 |
| Portable Plant #83200594 · Intermittent6/8 quarters reported | Eddy, NDSurface · MSHA: Construction Sand and Gravel | 0 | 393 | 0 | 0 | 2.3 |
| Rollag Plant2103810 · Intermittent6/8 quarters reported | Clay, MNSurface · MSHA: Construction Sand and Gravel | 0 | 9,747 | 2 | 0 | 16.5 |
| Star Plant3200706 · Intermittent6/8 quarters reported | Barnes, NDSurface · MSHA: Construction Sand and Gravel | 0 | 2,881 | 0 | 0 | 1.8 |
| Verdendrye Plant3200386 · Intermittent6/8 quarters reported | Grand Forks, NDSurface · MSHA: Construction Sand and Gravel | 0 | 6,409 | 1 | 0 | 8.8 |
| Warroad Plant2103288 · Intermittent6/8 quarters reported | Lake Of The Woods, MNSurface · MSHA: Crushed, Broken Stone NEC | 0 | 0 | 0 | 0 | 5.0 |
| Portable #103200172 · Abandoned | Stutsman, NDSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Portable #113201035 · Abandoned6/8 quarters reported | Williams, NDSurface · MSHA: Construction Sand and Gravel | 0 | 0 | 0 | 0 | 4.0 |
| Portable Crushing Plant #43200734 · Abandoned2/8 quarters reported | Burleigh, NDSurface · MSHA: Construction Sand and Gravel | 0 | 0 | 0 | 0 | — |
| Portable Plant #123200711 · Abandoned | Kidder, NDSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| PORTABLE PLANT # 93200990 · Temporarily Idled6/8 quarters reported | Richland, MTSurface · MSHA: Construction Sand and Gravel | 0 | 313 | 0 | 0 | 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
21 of 21 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- 218 Plant47.77417, -96.60805Open map ↗
- Detroit Lakes Plant46.79689, -95.92027Open map ↗
- Forester Pit48.66111, -96.60028Open map ↗
- Northern Sand & Gravel47.43778, -92.81278Open map ↗
- Portable Crushing Plant #147.72028, -96.79472Open map ↗
- Portable Plant #1046.86306, -96.78028Open map ↗
- Portable Plant #246.72278, -96.16389Open map ↗
- Portable Plant #347.92528, -97.03278Open map ↗
- Portable Plant #546.96250, -96.29194Open map ↗
- Portable Plant #647.93667, -97.09556Open map ↗
- Portable Plant #747.02417, -96.39861Open map ↗
- Portable Plant #846.91083, -100.41139Open map ↗
- Rollag Plant47.93083, -97.11500Open map ↗
- Star Plant46.88722, -100.85167Open map ↗
- Verdendrye Plant48.12556, -100.72194Open map ↗
- Warroad Plant48.90250, -95.07000Open map ↗
- Portable #1046.90972, -98.69639Open map ↗
- Portable #1146.78111, -100.71333Open map ↗
- Portable Crushing Plant #447.25778, -101.29083Open map ↗
- Portable Plant #1247.12833, -99.99889Open map ↗
- PORTABLE PLANT # 947.86750, -104.08167Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 21 mines listed under this operator were checked; 19 have reports in the available quarters. Totals use current ownership.
Hours worked
118,192reported 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 | 0 | — | 0 | 19/19 mines reporting |
| 2025 Q2 | 0 | 28,553 | 0.00 | 53 | 19/19 mines reporting |
| 2025 Q3 | 0 | 37,121 | 0.00 | 90 | 18/19 mines reporting |
| 2025 Q4 | 0 | 21,660 | 0.00 | 51 | 18/19 mines reporting |
| 2026 Q1 | 0 | 0 | — | 0 | 18/19 mines reporting |
| 2026 Q2 | 0 | 30,858 | 0.00 | 59 | 18/19 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
215 significant & substantial (S&S)
Accident records
00 records classified as fatality
Proposed penalties · USD
2,463.0014 of 21 violations with amounts
On-site inspection hours
153.7532 inspections · 32 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 | 8 | 2 | 1,360.00 | 0 | 0 | 7 | 53.0 |
| 2025-Q3 | 1 | 0 | 151.00 | 0 | 0 | 7 | 41.8 |
| 2025-Q4 | 1 | 0 | 151.00 | 0 | 0 | 2 | 8.0 |
| 2026-Q1 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q2 | 1 | 0 | — | 0 | 0 | 3 | 6.8 |
| 2026-Q3 | 10 | 3 | 801.00 | 0 | 0 | 13 | 44.3 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Portable Plant #6 · 3200140
Compliance Follow-up Inspection · 0.5 on-site hours
- Rollag Plant · 2103810
Mine Idle Activity · 1.5 on-site hours
- Portable Plant #3 · 3200150
Regular Safety and Health Inspection · 4.0 on-site hours
- Portable Plant #3 · 3200150
56.11002 · S&S
- Portable Plant #3 · 3200150
56.12004 · S&S
- Portable Plant #3 · 3200150
56.12004
- Forester Pit · 2100623
Regular Safety and Health Inspection · 3.0 on-site hours
- Forester Pit · 2100623
56.12004
- Portable Plant #6 · 3200140
56.12030
- Portable Plant #6 · 3200140
56.12004
- Northern Sand & Gravel · 2100576
Regular Safety and Health Inspection · 3.0 on-site hours
- Portable Plant #6 · 3200140
Regular Safety and Health Inspection · 6.5 on-site hours
- Portable Plant #5 · 3200773
Mine Idle Activity · 0.3 on-site hours
- Warroad Plant · 2103288
Mine Idle Activity · 2.0 on-site hours
- Portable Plant #8 · 3200594
Mine Idle Activity · 0.0 on-site hours
- Detroit Lakes Plant · 2103107
Regular Safety and Health Inspection · 8.0 on-site hours
- Detroit Lakes Plant · 2103107
56.12004 · $151.00 proposed
- Portable Plant #2 · 3200151
Regular Safety and Health Inspection · 3.8 on-site hours
- Portable Plant #2 · 3200151
56.12004 · $151.00 proposed
- Portable Plant #2 · 3200151
46.5 · S&S · $348.00 proposed
- Verdendrye Plant · 3200386
56.12004 · $151.00 proposed
- Verdendrye Plant · 3200386
Regular Safety and Health Inspection · 8.8 on-site hours
- Portable Plant #7 · 3200807
Regular Safety and Health Inspection · 3.0 on-site hours
- Portable Crushing Plant #1 · 2102843
Regular Safety and Health Inspection · 3.3 on-site hours
- Portable Crushing Plant #1 · 2102843
56.14101(a)(3)
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.