Coal production
0reported short tons
ACTIVE / CONTROLLER PORTFOLIO
Saint-Gobain
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM08468
MINE PORTFOLIO
7 of 7 mines and facilities
2025-01-01 – 2026-10-18. Active 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 |
|---|---|---|---|---|---|---|
| Black Rock Mine0202145 · Active6/8 quarters reported | Mohave, AZSurface · MSHA: Gypsum | 0 | 36,083 | 6 | 2 | 37.5 |
| Certainteed Cody Quarry4800629 · Active6/8 quarters reported | Park, WYSurface · MSHA: Gypsum | 0 | 5,881 | 2 | 0 | 12.8 |
| CertainTeed Cody RHP4801854 · Active6/8 quarters reported | Park, WYFacility · MSHA: Gypsum | 0 | 14,149 | 1 | 0 | 13.5 |
| CertainTeed Gypsum Manufacturing Inc0300276 · Active6/8 quarters reported | Howard, ARSurface · MSHA: Gypsum | 0 | 166,784 | 17 | 0 | 76.5 |
| Gads Hill Plant2301372 · Active6/8 quarters reported | Wayne, MOSurface · MSHA: Crushed, Broken Granite | 0 | 182,132 | 6 | 2 | 51.8 |
| Glenwood Quarry0300466 · Active6/8 quarters reported | Montgomery, ARSurface · MSHA: Crushed, Broken Slate | 0 | 61,677 | 13 | 0 | 68.0 |
| Pleasant Valley Mine1300435 · Active6/8 quarters reported | Webster, IASurface · MSHA: Gypsum | 0 | 24,719 | 7 | 1 | 25.5 |
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
7 of 7 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Black Rock Mine36.93750, -113.63306Open map ↗
- Certainteed Cody Quarry44.52639, -109.05667Open map ↗
- CertainTeed Cody RHP44.54472, -109.05444Open map ↗
- CertainTeed Gypsum Manufacturing Inc33.94556, -93.84722Open map ↗
- Gads Hill Plant37.23778, -90.69556Open map ↗
- Glenwood Quarry34.36139, -93.57750Open map ↗
- Pleasant Valley Mine42.48500, -94.13139Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 7 mines listed under this controller were checked; 7 have reports in the available quarters. Totals use current ownership.
Hours worked
491,425reported 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 | 86,172 | 0.00 | 190 | 7/7 mines reporting |
| 2025 Q2 | 0 | 83,626 | 0.00 | 183 | 7/7 mines reporting |
| 2025 Q3 | 0 | 86,115 | 0.00 | 187 | 7/7 mines reporting |
| 2025 Q4 | 0 | 76,907 | 0.00 | 181 | 7/7 mines reporting |
| 2026 Q1 | 0 | 79,222 | 0.00 | 176 | 7/7 mines reporting |
| 2026 Q2 | 0 | 79,383 | 0.00 | 174 | 7/7 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
522 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
8,069.0051 of 52 violations with amounts
On-site inspection hours
285.5029 inspections · 29 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 | 630.00 | 1 | 0 | 4 | 57.8 |
| 2025-Q2 | 7 | 0 | 1,057.00 | 0 | 0 | 3 | 20.8 |
| 2025-Q3 | 16 | 0 | 2,601.00 | 0 | 0 | 6 | 54.3 |
| 2025-Q4 | 11 | 0 | 1,661.00 | 1 | 0 | 5 | 59.3 |
| 2026-Q1 | 2 | 1 | 302.00 | 2 | 0 | 3 | 19.8 |
| 2026-Q2 | 6 | 0 | 1,046.00 | 1 | 0 | 3 | 32.3 |
| 2026-Q3 | 5 | 0 | 772.00 | 0 | 0 | 4 | 36.0 |
| 2026-Q4 * | 1 | 1 | — | 0 | 0 | 1 | 5.5 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Pleasant Valley Mine · 1300435
56.11001 · $151.00 proposed
- Pleasant Valley Mine · 1300435
50.30(a) · $151.00 proposed
- Glenwood Quarry · 0300466
50.30(a) · $151.00 proposed
- Glenwood Quarry · 0300466
56.11012 · $151.00 proposed
- Glenwood Quarry · 0300466
56.12018 · $151.00 proposed
- Glenwood Quarry · 0300466
56.20003(a) · $151.00 proposed
- Glenwood Quarry · 0300466
56.20003(a) · $151.00 proposed
- Glenwood Quarry · 0300466
56.11002 · $151.00 proposed
- Glenwood Quarry · 0300466
56.12008 · $151.00 proposed
- Glenwood Quarry · 0300466
56.12032 · $151.00 proposed
- Glenwood Quarry · 0300466
Regular Safety and Health Inspection · 16.3 on-site hours
- Pleasant Valley Mine · 1300435
Special Emphasis Programs · 1.0 on-site hours
- Gads Hill Plant · 2301372
Special Emphasis Programs · 0.8 on-site hours
- CertainTeed Gypsum Manufacturing Inc · 0300276
56.20003(a) · $151.00 proposed
- CertainTeed Gypsum Manufacturing Inc · 0300276
56.4201(a)(1) · $151.00 proposed
- CertainTeed Gypsum Manufacturing Inc · 0300276
56.12032 · $336.00 proposed
- CertainTeed Gypsum Manufacturing Inc · 0300276
Regular Safety and Health Inspection · 24.8 on-site hours
- CertainTeed Cody RHP · 4801854
Regular Safety and Health Inspection · 4.0 on-site hours
- CertainTeed Cody RHP · 4801854
56.14132(b)(2) · $151.00 proposed
- Certainteed Cody Quarry · 4800629
56.16003 · $151.00 proposed
- Certainteed Cody Quarry · 4800629
Regular Safety and Health Inspection · 4.3 on-site hours
- Black Rock Mine · 0202145
Regular Safety and Health Inspection · 12.5 on-site hours
- Black Rock Mine · 0202145
56.4101 · $151.00 proposed
- Black Rock Mine · 0202145
56.15014 · $151.00 proposed
- Gads Hill Plant · 2301372
56.12028 · $151.00 proposed
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
5 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.