Coal production
0reported short tons
ACTIVE / OPERATOR PORTFOLIO
Martin Marietta Southeast Agg Operations, LLC
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR ID0200133
MINE PORTFOLIO
15 of 15 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 |
|---|---|---|---|---|---|---|
| ABINGDON QUARRY4400003 · Active6/8 quarters reported | Washington, VASurface · MSHA: Crushed, Broken Limestone NEC | 0 | 36,090 | 3 | 0 | 130.0 |
| Allsboro Quarry & Mill0102014 · Active6/8 quarters reported | Colbert, ALSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 54,547 | 3 | 1 | 28.3 |
| COY STONE PLANT ADDITION4002465 · Active6/8 quarters reported | Jefferson, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 6,115 | 2 | 0 | 37.0 |
| ELIZABETHTON QUARRY4003075 · Active6/8 quarters reported | Carter, TNSurface · MSHA: Crushed, Broken Stone NEC | 0 | 18,041 | 1 | 0 | 40.0 |
| Forks of the River Quarry4001610 · Active6/8 quarters reported | Knox, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 56,986 | 5 | 1 | 111.5 |
| Greenback Quarry4002488 · Active6/8 quarters reported | Loudon, TNSurface · MSHA: Crushed, Broken Stone NEC | 0 | 53,034 | 1 | 0 | 50.5 |
| I-75 QUARRY4001247 · Active6/8 quarters reported | Knox, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 41,817 | 3 | 0 | 79.8 |
| Locust Mount Quarry4000122 · Active6/8 quarters reported | Washington, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 18,054 | 1 | 0 | 51.3 |
| MIDWAY QUARRY4001169 · Active6/8 quarters reported | Knox, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 47,033 | 2 | 0 | 119.8 |
| Monterey Sand4000798 · Active6/8 quarters reported | Putnam, TNSurface · MSHA: Construction Sand and Gravel | 0 | 42,254 | 4 | 1 | 58.3 |
| North Huntsville Quarry & Mill0102660 · Active6/8 quarters reported | Madison, ALSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 69,185 | 3 | 0 | 39.3 |
| SDI Aggregates LLC0801336 · Active6/8 quarters reported | Miami-Dade, FLSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 75,533 | 3 | 0 | 46.5 |
| Stones River Quarry4003415 · Active6/8 quarters reported | Cannon, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 9,933 | 1 | 0 | 24.3 |
| TRI-CITIES AIRPORT QUARRY4001657 · Active6/8 quarters reported | Sullivan, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 50,699 | 3 | 0 | 91.0 |
| WATAUGA QUARRY4000124 · Active6/8 quarters reported | Carter, TNSurface · MSHA: Crushed, Broken Limestone NEC | 0 | 56,419 | 5 | 3 | 101.8 |
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
15 of 15 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- ABINGDON QUARRY36.69528, -81.98278Open map ↗
- Allsboro Quarry & Mill34.72611, -88.11694Open map ↗
- COY STONE PLANT ADDITION36.11944, -83.47889Open map ↗
- ELIZABETHTON QUARRY36.37667, -82.18639Open map ↗
- Forks of the River Quarry35.98056, -83.82528Open map ↗
- Greenback Quarry35.71306, -84.20250Open map ↗
- I-75 QUARRY36.11000, -84.02056Open map ↗
- Locust Mount Quarry36.34500, -82.57250Open map ↗
- MIDWAY QUARRY36.06806, -83.71583Open map ↗
- Monterey Sand36.12722, -85.34333Open map ↗
- North Huntsville Quarry & Mill34.77861, -86.64333Open map ↗
- SDI Aggregates LLC25.41861, -80.44417Open map ↗
- Stones River Quarry35.80333, -86.14556Open map ↗
- TRI-CITIES AIRPORT QUARRY36.49611, -82.42583Open map ↗
- WATAUGA QUARRY36.36389, -82.28806Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 15 mines listed under this operator were checked; 15 have reports in the available quarters. Totals use current ownership.
Hours worked
635,740reported 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 | 114,587 | 0.00 | 199 | 15/15 mines reporting |
| 2025 Q2 | 0 | 121,965 | 0.00 | 200 | 15/15 mines reporting |
| 2025 Q3 | 0 | 93,504 | 0.00 | 203 | 15/15 mines reporting |
| 2025 Q4 | 0 | 94,432 | 0.00 | 196 | 15/15 mines reporting |
| 2026 Q1 | 0 | 102,909 | 0.00 | 202 | 15/15 mines reporting |
| 2026 Q2 | 0 | 108,343 | 0.00 | 200 | 15/15 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
407 significant & substantial (S&S)
Accident records
60 records classified as fatality
Proposed penalties · USD
13,291.0037 of 40 violations with amounts
On-site inspection hours
1,009.0075 inspections · 75 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 | 3 | 1 | 6,332.00 | 1 | 0 | 8 | 100.5 |
| 2025-Q2 | 8 | 3 | 1,630.00 | 0 | 0 | 11 | 188.3 |
| 2025-Q3 | 3 | 0 | 453.00 | 1 | 0 | 12 | 156.0 |
| 2025-Q4 | 4 | 1 | 864.00 | 0 | 0 | 10 | 165.3 |
| 2026-Q1 | 4 | 0 | 1,080.00 | 1 | 0 | 11 | 118.3 |
| 2026-Q2 | 9 | 1 | 2,026.00 | 0 | 0 | 11 | 143.8 |
| 2026-Q3 | 8 | 1 | 906.00 | 3 | 0 | 9 | 124.0 |
| 2026-Q4 * | 1 | 0 | — | 0 | 0 | 3 | 13.0 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- North Huntsville Quarry & Mill · 0102660
46.7 · $151.00 proposed
- MIDWAY QUARRY · 4001169
Regular Safety and Health Inspection · 16.8 on-site hours
- Forks of the River Quarry · 4001610
56.12032 · $151.00 proposed
- Forks of the River Quarry · 4001610
Regular Safety and Health Inspection · 21.8 on-site hours
- Forks of the River Quarry · 4001610
56.14132(b)(2) · $818.00 proposed
- Monterey Sand · 4000798
Regular Safety and Health Inspection · 14.5 on-site hours
- Monterey Sand · 4000798
56.14100(b) · $151.00 proposed
- ELIZABETHTON QUARRY · 4003075
56.16005 · $151.00 proposed
- ELIZABETHTON QUARRY · 4003075
Regular Safety and Health Inspection · 15.5 on-site hours
- Stones River Quarry · 4003415
Regular Safety and Health Inspection · 7.5 on-site hours
- Stones River Quarry · 4003415
56.20003(c) · $151.00 proposed
- ABINGDON QUARRY · 4400003
56.14100(c) · S&S · $151.00 proposed
- ABINGDON QUARRY · 4400003
56.4102 · $151.00 proposed
- ABINGDON QUARRY · 4400003
Regular Safety and Health Inspection · 40.0 on-site hours
- Allsboro Quarry & Mill · 0102014
Regular Safety and Health Inspection · 4.8 on-site hours
- Allsboro Quarry & Mill · 0102014
56.14100(a) · $151.00 proposed
- COY STONE PLANT ADDITION · 4002465
Regular Safety and Health Inspection · 10.0 on-site hours
- SDI Aggregates LLC · 0801336
Compliance Follow-up Inspection · 2.0 on-site hours
- I-75 QUARRY · 4001247
Spot Inspection · 2.0 on-site hours
- MIDWAY QUARRY · 4001169
Spot Inspection · 22.0 on-site hours
- SDI Aggregates LLC · 0801336
56.20011 · $151.00 proposed
- SDI Aggregates LLC · 0801336
56.20011 · $465.00 proposed
- SDI Aggregates LLC · 0801336
Regular Safety and Health Inspection · 14.5 on-site hours
- SDI Aggregates LLC · 0801336
56.11010 · $313.00 proposed
- Forks of the River Quarry · 4001610
Spot Inspection · 6.0 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.