Coal production
0reported short tons
ALL STATUSES / OPERATOR PORTFOLIO
Four Corners Materials
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDL16678
MINE PORTFOLIO
49 of 49 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 |
|---|---|---|---|---|---|---|
| CO Crusher0503178 · Active6/8 quarters reported | Montezuma, COSurface · MSHA: Construction Sand and Gravel | 0 | 21,296 | 3 | 0 | 23.5 |
| CR100504887 · Active6/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,588 | 7 | 0 | 29.8 |
| CR30504231 · Active6/8 quarters reported | Delta, COSurface · MSHA: Construction Sand and Gravel | 0 | 10,281 | 9 | 1 | 38.0 |
| CR40504656 · Active6/8 quarters reported | Delta, COSurface · MSHA: Construction Sand and Gravel | 0 | 10,533 | 1 | 0 | 26.5 |
| CR50504739 · Active6/8 quarters reported | Garfield, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,349 | 1 | 1 | 15.3 |
| CR 60503850 · Intermittent | Mesa, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | 12.3 |
| CR60504740 · Active6/8 quarters reported | Garfield, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,254 | 1 | 1 | 15.5 |
| CR70504835 · Active6/8 quarters reported | Montrose, COSurface · MSHA: Construction Sand and Gravel | 0 | 9,358 | 0 | 1 | 10.0 |
| CR80504836 · Active6/8 quarters reported | Montrose, COSurface · MSHA: Construction Sand and Gravel | 0 | 9,358 | 0 | 0 | 10.3 |
| CR90504888 · Active6/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,896 | 5 | 0 | 26.3 |
| FCM Crusher 4 (CSP#4)0504356 · Intermittent6/8 quarters reported | Pueblo, COSurface · MSHA: Construction Sand and Gravel | 0 | 10,808 | 0 | 0 | 21.3 |
| Milner Pit0504641 · Intermittent6/8 quarters reported | Routt, COSurface · MSHA: Construction Sand and Gravel | 0 | 17,642 | 7 | 0 | 13.3 |
| NM Crusher #1 (portable)2901258 · Active6/8 quarters reported | San Juan, NMSurface · MSHA: Sand, Common | 0 | 20,526 | 1 | 0 | 42.0 |
| Portable Crusher #10504854 · Active6/8 quarters reported | Moffat, COSurface · MSHA: Construction Sand and Gravel | 0 | 15,447 | 8 | 2 | 27.0 |
| Portable Crusher #20503808 · Active6/8 quarters reported | Pueblo, COSurface · MSHA: Construction Sand and Gravel | 0 | 14,368 | 15 | 0 | 36.3 |
| Portable Crusher #30504706 · Active6/8 quarters reported | Las Animas, COSurface · MSHA: Construction Sand and Gravel | 0 | 22,017 | 7 | 1 | 15.0 |
| Portable Crusher #40504875 · Active6/8 quarters reported | Pueblo, COSurface · MSHA: Construction Sand and Gravel | 0 | 38,563 | 16 | 0 | 28.0 |
| Portable Crusher # 50505041 · Intermittent6/8 quarters reported | Pueblo, COSurface · MSHA: Construction Sand and Gravel | 0 | 20,214 | 12 | 0 | 29.8 |
| Portable Crusher #60505040 · Intermittent6/8 quarters reported | Fremont, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,405 | 5 | 0 | 9.3 |
| Portable Wash Plant #30505121 · Intermittent6/8 quarters reported | Crowley, COSurface · MSHA: Construction Sand and Gravel | 0 | 2,807 | 2 | 0 | 6.5 |
| Portable Wash Plant (WP #4)0503510 · Intermittent5/8 quarters reported | Garfield, COSurface · MSHA: Construction Sand and Gravel | 0 | 1,553 | 3 | 0 | 12.8 |
| Ralston Quarry0503007 · Intermittent6/8 quarters reported | Jefferson, COSurface · MSHA: Crushed, Broken Stone NEC | 0 | 79,254 | 22 | 0 | 91.8 |
| SP 20504624 · Intermittent5/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 630 | 0 | 0 | 2.5 |
| SP30504741 · Intermittent5/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 1,816 | 3 | 0 | 8.0 |
| SP40504834 · Intermittent5/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 6,503 | 1 | 0 | 11.0 |
| Wash Plant 20504999 · Intermittent6/8 quarters reported | Fremont, COSurface · MSHA: Construction Sand and Gravel | 0 | 8,152 | 2 | 0 | 12.5 |
| Wash Plant #50504832 · Intermittent6/8 quarters reported | La Plata, COSurface · MSHA: Construction Sand and Gravel | 0 | 13,691 | 1 | 0 | 27.3 |
| WP10501050 · Intermittent6/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 5,712 | 1 | 0 | 24.5 |
| WP20504585 · Intermittent6/8 quarters reported | Mesa, COSurface · MSHA: Construction Sand and Gravel | 0 | 4,935 | 2 | 0 | 16.8 |
| WP 30504549 · Intermittent5/8 quarters reported | Jefferson, COSurface · MSHA: Construction Sand and Gravel | 0 | 1,745 | 2 | 0 | 5.3 |
| Bisti Wash Plant2902097 · Abandoned | San Juan, NMSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| CC042902266 · Abandoned | San Juan, NMSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Coaldale0505125 · Abandoned | Fremont, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| FCM Crusher 22902262 · Abandoned | San Juan, NMSurface · MSHA: Sand, Industrial NEC | — | — | 0 | 0 | — |
| FCM Portable Crusher2900450 · Abandoned | San Juan, NMSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| FCM Rental Crusher0504119 · Abandoned | Montezuma, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| FCM Washplant #22902306 · Abandoned | San Juan, NMSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Kattenberg0505116 · Abandoned | Grand, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Mackenzie Pit0500977 · Abandoned | Fremont, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| NM Wash Plant2901073 · Abandoned | San Juan, NMSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Portable Crusher #70505117 · Abandoned | Otero, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Portable Crusher #90505163 · Abandoned5/8 quarters reported | Fremont, COSurface · MSHA: Construction Sand and Gravel | 0 | 9,356 | 7 | 2 | 13.8 |
| Portable Deck Screen0504937 · Abandoned | Montezuma, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| PORTABLE PLANT #10504571 · Abandoned1/8 quarters reported | Rio Grande, COSurface · MSHA: Construction Sand and Gravel | 0 | 0 | 0 | 0 | — |
| Portable Screen Plant #10504552 · Abandoned | Fremont, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Scott Pit0504484 · Abandoned | La Plata, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| SP10500967 · Abandoned | Mesa, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| Specialty Crusher0503422 · Abandoned | La Plata, COSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| WP40504794 · Abandoned | Mesa, COSurface · 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
41 of 49 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- CO Crusher37.33833, -108.33056Open map ↗
- CR1039.09917, -108.63250Open map ↗
- CR338.81417, -107.69194Open map ↗
- CR438.96861, -108.47389Open map ↗
- CR539.53611, -107.74611Open map ↗
- CR 639.16944, -108.77250Open map ↗
- CR639.53611, -107.74611Open map ↗
- CR738.50194, -107.93444Open map ↗
- CR838.50194, -107.93444Open map ↗
- CR939.09917, -108.63250Open map ↗
- FCM Crusher 4 (CSP#4)37.33667, -108.34222Open map ↗
- Milner Pit40.47444, -107.01194Open map ↗
- NM Crusher #1 (portable)37.68639, -106.52111Open map ↗
- Portable Crusher #141.00889, -107.65889Open map ↗
- Portable Crusher #238.20583, -104.16833Open map ↗
- Portable Crusher #338.53417, -107.85750Open map ↗
- Portable Crusher #438.42556, -104.69806Open map ↗
- Portable Crusher # 538.20194, -104.45639Open map ↗
- Portable Crusher #638.36139, -105.76111Open map ↗
- Portable Wash Plant #338.12722, -103.85472Open map ↗
- Portable Wash Plant (WP #4)37.33667, -108.34222Open map ↗
- Ralston Quarry39.81389, -105.24806Open map ↗
- SP 239.09917, -108.63250Open map ↗
- SP339.09917, -108.63250Open map ↗
- SP439.09917, -108.63250Open map ↗
- Wash Plant 238.39500, -105.08139Open map ↗
- Wash Plant #538.53278, -107.93028Open map ↗
- WP139.09917, -108.63250Open map ↗
- WP239.09917, -108.63250Open map ↗
- WP 339.09250, -108.61194Open map ↗
- Bisti Wash Plant36.72806, -108.21861Open map ↗
- Coaldale38.36139, -105.76111Open map ↗
- FCM Crusher 236.72805, -108.21861Open map ↗
- FCM Portable Crusher36.74111, -108.27861Open map ↗
- FCM Rental Crusher37.32972, -108.34306Open map ↗
- Kattenberg40.08528, -105.90417Open map ↗
- Mackenzie Pit38.41863, -105.17803Open map ↗
- Portable Crusher #738.01417, -103.74556Open map ↗
- Portable Crusher #938.09361, -103.00111Open map ↗
- PORTABLE PLANT #139.18917, -106.36861Open map ↗
- WP439.09917, -108.63250Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. All 49 mines listed under this operator were checked; 31 have reports in the available quarters. Totals use current ownership.
Hours worked
399,057reported 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 | 37,303 | 0.00 | 158 | 31/31 mines reporting |
| 2025 Q2 | 0 | 78,912 | 0.00 | 238 | 30/31 mines reporting |
| 2025 Q3 | 0 | 89,527 | 0.00 | 155 | 30/31 mines reporting |
| 2025 Q4 | 0 | 64,287 | 0.00 | 134 | 30/31 mines reporting |
| 2026 Q1 | 0 | 50,501 | 0.00 | 122 | 24/31 mines reporting |
| 2026 Q2 | 0 | 78,527 | 0.00 | 131 | 30/31 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
14420 significant & substantial (S&S)
Accident records
90 records classified as fatality
Proposed penalties · USD
56,573.00129 of 144 violations with amounts
On-site inspection hours
661.50123 inspections · 123 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 | 31 | 4 | 5,632.00 | 0 | 0 | 19 | 121.8 |
| 2025-Q2 | 8 | 1 | 2,210.00 | 1 | 0 | 8 | 40.5 |
| 2025-Q3 | 27 | 6 | 15,948.00 | 3 | 0 | 35 | 144.0 |
| 2025-Q4 | 27 | 3 | 7,605.00 | 2 | 0 | 10 | 81.5 |
| 2026-Q1 | 8 | 1 | 1,455.00 | 1 | 0 | 14 | 65.0 |
| 2026-Q2 | 21 | 2 | 4,443.00 | 1 | 0 | 12 | 110.0 |
| 2026-Q3 | 21 | 3 | 19,280.00 | 1 | 0 | 23 | 98.8 |
| 2026-Q4 * | 1 | 0 | — | 0 | 0 | 2 | 0.0 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Wash Plant #5 · 0504832
Regular Safety and Health Inspection · 0.0 on-site hours
- CO Crusher · 0503178
56.14107(a)
- CO Crusher · 0503178
Regular Safety and Health Inspection · 0.0 on-site hours
- NM Crusher #1 (portable) · 2901258
Regular Safety and Health Inspection · 4.0 on-site hours
- Portable Crusher #3 · 0504706
Regular Safety and Health Inspection · 4.0 on-site hours
- Portable Crusher #3 · 0504706
56.14107(a)
- CO Crusher · 0503178
Regular Safety and Health Inspection · 7.0 on-site hours
- CR 6 · 0503850
Regular Safety and Health Inspection · 11.8 on-site hours
- CR 6 · 0503850
Mine Idle Activity · 0.5 on-site hours
- Portable Crusher #9 · 0505163
Mine Idle Activity · 0.5 on-site hours
- WP 3 · 0504549
56.1000
- WP 3 · 0504549
56.1000
- WP 3 · 0504549
Regular Safety and Health Inspection · 5.3 on-site hours
- Portable Crusher #6 · 0505040
48.9(a)
- Portable Crusher #6 · 0505040
41.12
- Portable Crusher #6 · 0505040
56.11002
- Portable Crusher #6 · 0505040
56.11004
- Portable Wash Plant #3 · 0505121
56.4200(b)(2)
- Portable Crusher #6 · 0505040
Regular Safety and Health Inspection · 4.5 on-site hours
- Portable Wash Plant #3 · 0505121
Regular Safety and Health Inspection · 4.5 on-site hours
- CR6 · 0504740
HANDTOOLS (NONPOWERED) · DAYS AWAY FROM WORK ONLY
Accident narrative
The crusher laborer was assisting with removing a screen. The employee on the opposite side of the screen had the screen raised up with a bar while injured was lifting the other end with their hands. As injured was holding it up the bar slipped out from under the other end and the screen came down on their right hand, catching their hand between the screen and the frame.
- SP 2 · 0504624
Regular Safety and Health Inspection · 1.0 on-site hours
- Portable Wash Plant (WP #4) · 0503510
Regular Safety and Health Inspection · 9.5 on-site hours
- Portable Wash Plant (WP #4) · 0503510
56.14107(a) · $151.00 proposed
- CR7 · 0504835
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.