Coal production
0reported short tons
ALL STATUSES / OPERATOR PORTFOLIO
Arcosa Aggregates West, LLC.
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR ID0186133
MINE PORTFOLIO
11 of 11 mines and facilities
2025-01-01 – 2026-10-18. 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 |
|---|---|---|---|---|---|---|
| 1014 EAGLE MOUNTAIN QUARRY0203146 · Active6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 25,275 | 7 | 1 | 29.5 |
| 1015 Northern0203296 · Intermittent6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 23,612 | 2 | 0 | 26.3 |
| 1016 Peoria0203359 · Active6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 43,668 | 23 | 0 | 79.5 |
| 1024 San Tan Valley0203493 · Intermittent6/8 quarters reported | Pinal, AZSurface · MSHA: Sand, Common | 0 | 57,952 | 5 | 4 | 11.8 |
| 1046 Shaw0203519 · Intermittent6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 22,815 | 7 | 1 | 15.5 |
| 1050 Estrella Pit0202372 · Active6/8 quarters reported | Apache, AZSurface · MSHA: Construction Sand and Gravel | 0 | 86,250 | 20 | 1 | 37.3 |
| 1051 Sun City Plant0203524 · Intermittent6/8 quarters reported | Maricopa, AZSurface · MSHA: Construction Sand and Gravel | 0 | 31,505 | 2 | 0 | 11.8 |
| 1010 Queen Creek #10202821 · Abandoned | Pinal, AZSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| 1012 Queen Creek #30202663 · Temporarily Idled | Pinal, AZSurface · MSHA: Construction Sand and Gravel | — | — | 0 | 0 | — |
| 1013 Coolidge0203338 · Temporarily Idled6/8 quarters reported | Pinal, AZSurface · MSHA: Construction Sand and Gravel | 0 | 32,783 | 8 | 0 | 16.0 |
| 1018 Old Coolidge0203192 · Abandoned | Maricopa, AZSurface · 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
11 of 11 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- 1014 EAGLE MOUNTAIN QUARRY33.32944, -112.52167Open map ↗
- 1015 Northern33.55444, -112.30611Open map ↗
- 1016 Peoria33.90056, -112.15167Open map ↗
- 1024 San Tan Valley33.23694, -111.51333Open map ↗
- 1046 Shaw32.96667, -111.53306Open map ↗
- 1050 Estrella Pit34.12833, -109.27500Open map ↗
- 1051 Sun City Plant33.66080, -112.28950Open map ↗
- 1010 Queen Creek #133.23556, -111.53306Open map ↗
- 1012 Queen Creek #333.23639, -111.52278Open map ↗
- 1013 Coolidge33.02556, -111.47556Open map ↗
- 1018 Old Coolidge33.53278, -112.30889Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 11 mines listed under this operator were checked; 8 have reports in the available quarters. Totals use current ownership.
Hours worked
323,860reported 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 | 50,411 | 0.00 | 87 | 8/8 mines reporting |
| 2025 Q2 | 0 | 58,236 | 0.00 | 87 | 8/8 mines reporting |
| 2025 Q3 | 0 | 63,619 | 0.00 | 88 | 8/8 mines reporting |
| 2025 Q4 | 0 | 51,311 | 0.00 | 86 | 8/8 mines reporting |
| 2026 Q1 | 0 | 50,696 | 0.00 | 84 | 8/8 mines reporting |
| 2026 Q2 | 0 | 49,587 | 0.00 | 90 | 8/8 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
7419 significant & substantial (S&S)
Accident records
70 records classified as fatality
Proposed penalties · USD
24,589.0067 of 74 violations with amounts
On-site inspection hours
227.5031 inspections · 31 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 | 10 | 4 | 6,531.00 | 0 | 0 | 3 | 14.0 |
| 2025-Q2 | 14 | 2 | 5,166.00 | 2 | 0 | 4 | 42.5 |
| 2025-Q3 | 14 | 3 | 3,490.00 | 1 | 0 | 5 | 51.5 |
| 2025-Q4 | 8 | 5 | 2,283.00 | 2 | 0 | 4 | 14.0 |
| 2026-Q1 | 14 | 4 | 4,256.00 | 0 | 0 | 6 | 53.8 |
| 2026-Q2 | 6 | 1 | 2,712.00 | 2 | 0 | 2 | 14.5 |
| 2026-Q3 | 8 | 0 | 151.00 | 0 | 0 | 7 | 37.3 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- 1016 Peoria · 0203359
Regular Safety and Health Inspection · 28.5 on-site hours
- 1016 Peoria · 0203359
46.5 · S&S · $443.00 proposed
- 1051 Sun City Plant · 0203524
Regular Safety and Health Inspection · 3.3 on-site hours
- 1024 San Tan Valley · 0203493
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employees thumb was pinched between stand and component while adjusting stand. Fracture and laceration to thumb.
- 1013 Coolidge · 0203338
Regular Safety and Health Inspection · 6.8 on-site hours
- 1014 EAGLE MOUNTAIN QUARRY · 0203146
56.4201(a)(2) · $151.00 proposed
- 1014 EAGLE MOUNTAIN QUARRY · 0203146
56.20003(c) · $151.00 proposed
- 1014 EAGLE MOUNTAIN QUARRY · 0203146
56.20003(a) · $151.00 proposed
- 1013 Coolidge · 0203338
56.14100(b) · $151.00 proposed
- 1013 Coolidge · 0203338
56.12004 · $151.00 proposed
- 1013 Coolidge · 0203338
56.12004 · $151.00 proposed
- 1014 EAGLE MOUNTAIN QUARRY · 0203146
Regular Safety and Health Inspection · 16.0 on-site hours
- 1050 Estrella Pit · 0202372
HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
The employee was working with another employee replacing a conveyor roller. The injured employee was holding the roller as another employee was taping it in place with a 3-pound hammer. The injured employee moved their hand, and it was struck by the hammer.
- 1015 Northern · 0203296
Regular Safety and Health Inspection · 11.8 on-site hours
- 1015 Northern · 0203296
56.12002 · $151.00 proposed
- 1024 San Tan Valley · 0203493
HANDTOOLS (NONPOWERED) · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
The employee had removed the pin on the tooth and was tapping it with a small sledgehammer on top to dislodge it from the shank. In the process of striking the tooth, a fragment of metal splintered off the tooth, striking the employee in the thigh.
- 1046 Shaw · 0203519
Regular Safety and Health Inspection · 8.0 on-site hours
- 1046 Shaw · 0203519
56.12016 · $151.00 proposed
- 1046 Shaw · 0203519
56.14107(a) · S&S · $959.00 proposed
- 1046 Shaw · 0203519
56.9300(b) · $642.00 proposed
- 1046 Shaw · 0203519
56.12008 · $959.00 proposed
- 1046 Shaw · 0203519
56.14107(a) · S&S · $959.00 proposed
- 1046 Shaw · 0203519
56.14107(a) · $288.00 proposed
- 1046 Shaw · 0203519
56.11005 · $151.00 proposed
- 1024 San Tan Valley · 0203493
Regular Safety and Health Inspection · 6.5 on-site hours
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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.