# Greenback Quarry

- **MSHA mine ID:** 4002488
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Loudon, TN
- **Operator:** Martin Marietta Southeast Agg Operations, LLC
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 2,013
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Southeast Agg Operations, LLC (0200133) → Greenback Quarry (4002488)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Clay  Willocks → Clay Willocks:** 1979-01-01 through 1986-04-16; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Elmer C  Burgess → Greenback Rock Quarry Inc:** 1986-04-17 through 1994-02-16; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Philip R  Moffett et at → Greenback Crushed Stone Inc:** 1994-02-17 through 2006-11-12; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials South Central, Inc.:** 2006-11-13 through 2007-07-09; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials South Central, Inc.:** 2006-11-13 through 2003-03-31; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials South Central, Inc.:** 2007-07-10 through 2008-02-21; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Ready Mix USA Inc → Aggregates USA LLC:** 2008-02-22 through 2010-02-05; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Aggregates USA Holdings LLC → Aggregates USA LLC:** 2010-02-06 through 2017-12-29; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Blue Water Industries Holdings LLC → Blue Water Industries:** 2017-12-30 through 2024-04-28; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Blue Water Industries:** 2024-04-29 through 2024-12-11; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Southeast Agg Operations, LLC:** 2024-12-12 through current/open; derived from co-tenure at mine 4002488; source `msha-controller-operator-history`.

- History rows: 11
- Typed edges: 30
- Interval anomalies: 1
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 22 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 133 violation rows across the full record; 31 carry an S&S flag and $16,469 appears in current assessed amounts.
3. **HEALTH — 28 samples:** Occupational health samples 28 personal. 1 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 10K employee hours and 17 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 7 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 5 conference records linked by issuance number.
6. **CONTRACTORS — 7 linked entities:** Contractors Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
7. **INSPECTIONS — 14 since 2021:** Inspections 86 inspection events and 1K published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 56.14107 — Moving machine parts.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12001 — Circuit overload protection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12001
- **30 CFR 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **30 CFR 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2004-06-30 through 2021-03-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1985-02-04 through 1985-02-04; source ID `msha-addresses`
- **Assessed Violations:** 130 rows; 2000-03-16 through 2024-03-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2013-03-26 through 2013-03-26; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2002-01-25 through 2023-06-07; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2012-05-07 through 2012-05-07; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,051 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 195 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 11 rows; 1979-01-01 through 2024-12-12; source ID `msha-controller-operator-history`
- **Inspections:** 86 rows; 2000-03-16 through 2026-09-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 291 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 75 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 28 rows; 2001-05-24 through 2025-08-27; source ID `msha-personal-health-samples`
- **Violations:** 133 rows; 2000-03-16 through 2026-09-09; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/greenback-quarry-4002488`
- JSON: `/api/v1/mines/greenback-quarry-4002488`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4002488/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4002488/relationships`
- MCP resource: `mine://4002488/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`