Coal production
0reported short tons
ACTIVE / CONTROLLER PORTFOLIO
Polycor Inc
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA CONTROLLER IDM12431
MINE PORTFOLIO
16 of 16 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 |
|---|---|---|---|---|---|---|
| Adams Quarry1200049 · Active6/8 quarters reported | Monroe, INSurface · MSHA: Dimension Limestone | 0 | 61,016 | 1 | 2 | 36.8 |
| American Black Quarry3605508 · Active6/8 quarters reported | Chester, PASurface · MSHA: Dimension Granite | 0 | 21,523 | 4 | 2 | 21.0 |
| Blueridge Quarry0901085 · Active6/8 quarters reported | Oglethorpe, GASurface · MSHA: Dimension Stone NEC | 0 | 18,147 | 0 | 1 | 18.8 |
| Eagles Danburg Quarry Inc0901224 · Active2/8 quarters reported | Wilkes, GASurface · MSHA: Dimension Stone NEC | 0 | 360 | 3 | 1 | 14.0 |
| Eagles Danburg Quarry, Inc. - Site 20901239 · Active6/8 quarters reported | Oglethorpe, GASurface · MSHA: Dimension Stone NEC | 0 | 23,275 | 2 | 0 | 25.0 |
| Empire Quarry1201061 · Active6/8 quarters reported | Lawrence, INSurface · MSHA: Dimension Limestone | 0 | 169,626 | 9 | 1 | 74.5 |
| Eureka Underground1202005 · Active6/8 quarters reported | Lawrence, INUnderground · MSHA: Dimension Limestone | 0 | 26,068 | 6 | 1 | 57.8 |
| Keystone Blue Quarry0900042 · Active6/8 quarters reported | Oglethorpe, GASurface · MSHA: Dimension Stone NEC | 0 | 27,064 | 0 | 2 | 37.5 |
| MILLSTONE QUARRY0901109 · Active6/8 quarters reported | Oglethorpe, GASurface · MSHA: Dimension Granite | 0 | 21,792 | 0 | 0 | 27.8 |
| North Jay White Quarry1700944 · Active6/8 quarters reported | Franklin, MESurface · MSHA: Construction Sand and Gravel | 0 | 59,052 | 3 | 9 | 18.8 |
| ROCK OF AGES DARK SIDE4300023 · Active6/8 quarters reported | Washington, VTSurface · MSHA: Dimension Granite | 0 | 39,602 | 11 | 0 | 67.3 |
| ROCK OF AGES LITE SIDE4300024 · Active6/8 quarters reported | Washington, VTSurface · MSHA: Dimension Granite | 0 | 37,862 | 0 | 2 | 51.5 |
| SWENSON GRAY QUARRY2700083 · Active6/8 quarters reported | Merrimack, NHSurface · MSHA: Dimension Stone NEC | 0 | 80,198 | 18 | 6 | 73.8 |
| Tate Quarry0900029 · Active6/8 quarters reported | Pickens, GASurface · MSHA: Dimension Marble | 0 | 53,994 | 3 | 0 | 61.8 |
| Victor Underground1202504 · Active6/8 quarters reported | Monroe, INUnderground · MSHA: Dimension Limestone | 0 | 65,762 | 6 | 1 | 78.3 |
| Woodbury Gray Quarry4300289 · Active6/8 quarters reported | Washington, VTSurface · MSHA: Dimension Granite | 0 | 38,091 | 2 | 2 | 26.5 |
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
16 of 16 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Adams Quarry39.08556, -86.53028Open map ↗
- American Black Quarry40.17139, -75.75222Open map ↗
- Blueridge Quarry34.04306, -83.03389Open map ↗
- Eagles Danburg Quarry Inc33.89139, -82.61889Open map ↗
- Eagles Danburg Quarry, Inc. - Site 233.95889, -83.00111Open map ↗
- Empire Quarry38.90194, -86.53000Open map ↗
- Eureka Underground38.86583, -86.56611Open map ↗
- Keystone Blue Quarry34.01333, -82.97611Open map ↗
- MILLSTONE QUARRY34.04306, -83.03389Open map ↗
- North Jay White Quarry44.53611, -70.22361Open map ↗
- ROCK OF AGES DARK SIDE44.14667, -72.48111Open map ↗
- ROCK OF AGES LITE SIDE44.14667, -72.48111Open map ↗
- SWENSON GRAY QUARRY43.23722, -71.56472Open map ↗
- Tate Quarry34.41306, -84.37028Open map ↗
- Victor Underground39.05778, -86.58472Open map ↗
- Woodbury Gray Quarry44.43667, -72.39028Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 16 mines listed under this controller were checked; 16 have reports in the available quarters. Totals use current ownership.
Hours worked
743,432reported 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 | 84,624 | 0.00 | 187 | 15/16 mines reporting |
| 2025 Q2 | 0 | 122,553 | 0.00 | 305 | 15/16 mines reporting |
| 2025 Q3 | 0 | 146,444 | 0.00 | 286 | 15/16 mines reporting |
| 2025 Q4 | 0 | 123,740 | 0.00 | 268 | 15/16 mines reporting |
| 2026 Q1 | 0 | 117,868 | 0.00 | 247 | 16/16 mines reporting |
| 2026 Q2 | 0 | 148,203 | 0.00 | 274 | 16/16 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
6820 significant & substantial (S&S)
Accident records
300 records classified as fatality
Proposed penalties · USD
34,699.0064 of 68 violations with amounts
On-site inspection hours
690.7583 inspections · 83 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 | 17 | 5 | 5,821.00 | 6 | 0 | 15 | 96.3 |
| 2025-Q2 | 18 | 1 | 2,920.00 | 5 | 0 | 10 | 133.0 |
| 2025-Q3 | 7 | 1 | 1,606.00 | 6 | 0 | 10 | 120.5 |
| 2025-Q4 | 2 | 2 | 1,410.00 | 2 | 0 | 4 | 35.3 |
| 2026-Q1 | 14 | 9 | 21,868.00 | 4 | 0 | 17 | 131.5 |
| 2026-Q2 | 5 | 2 | 302.00 | 4 | 0 | 12 | 77.8 |
| 2026-Q3 | 5 | 0 | 772.00 | 3 | 0 | 14 | 88.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 1 | 7.8 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- SWENSON GRAY QUARRY · 2700083
56.11012 · S&S · $336.00 proposed
- SWENSON GRAY QUARRY · 2700083
47.44(b) · $151.00 proposed
- Keystone Blue Quarry · 0900042
HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Miner was adding a section of drill steel using a wrench to tighten the connection. The miner's left thumb was caught between the drill boom and the wrench causing a small avulsion to the left thumb.
- SWENSON GRAY QUARRY · 2700083
HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT
Accident narrative
employee was pushing 7 pieces of curb from the splitter to the plunge saw, with another person, when EE felt a pop, EE stopped instantly.
- Woodbury Gray Quarry · 4300289
Regular Safety and Health Inspection · 5.5 on-site hours
- ROCK OF AGES DARK SIDE · 4300023
Regular Safety and Health Inspection · 12.3 on-site hours
- ROCK OF AGES LITE SIDE · 4300024
Regular Safety and Health Inspection · 5.0 on-site hours
- Eureka Underground · 1202005
Regular Safety and Health Inspection · 6.5 on-site hours
- Empire Quarry · 1201061
46.11(a) · S&S · $226.00 proposed
- Empire Quarry · 1201061
56.15001 · $151.00 proposed
- Empire Quarry · 1201061
47.31(a) · $151.00 proposed
- Empire Quarry · 1201061
56.16001 · S&S · $336.00 proposed
- Eureka Underground · 1202005
57.4402 · $151.00 proposed
- Eureka Underground · 1202005
57.14100(c) · $151.00 proposed
- Eureka Underground · 1202005
57.15006 · $151.00 proposed
- SWENSON GRAY QUARRY · 2700083
56.18002(b) · $151.00 proposed
- SWENSON GRAY QUARRY · 2700083
56.20003(b) · S&S · $1,431.00 proposed
- SWENSON GRAY QUARRY · 2700083
56.12020 · S&S · $1,431.00 proposed
- SWENSON GRAY QUARRY · 2700083
Description not reported · $168.00 proposed
- Empire Quarry · 1201061
Regular Safety and Health Inspection · 12.0 on-site hours
- Victor Underground · 1202504
Regular Safety and Health Inspection · 4.5 on-site hours
- Victor Underground · 1202504
57.11016 · $366.00 proposed
- North Jay White Quarry · 1700944
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was helping move power cords and pulled a muscle in left arm.
- SWENSON GRAY QUARRY · 2700083
Spot Inspection · 14.5 on-site hours
- SWENSON GRAY QUARRY · 2700083
103 (g) Written Notification Hazard Complaint Inspectio · 3.3 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
6 linked operators.
Relationships reflect the selected mine status and current MSHA controller/operator fields.