# Middle Quarry

- **MSHA mine ID:** 4003284
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Quartzite
- **Location:** Johnson, TN
- **Operator:** Tennessee Aggregates LLC
- **Controller:** Patti  Baker; Jeremy  Baker; Jessica  Baker
- **Public source rows linked:** 156
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Patti  Baker; Jeremy  Baker; Jessica  Baker (0177541) → Tennessee Aggregates LLC (0189593) → Middle Quarry (4003284)**

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

## Controller and operator valid-time history

- **Mary E  Edgar et al → Middle Quarry:** 2006-10-12 through 2023-05-24; derived from co-tenure at mine 4003284; source `msha-controller-operator-history`.
- **Tim E  Lewis et al → Middle Quarry:** 2006-10-12 through 2023-05-24; derived from co-tenure at mine 4003284; source `msha-controller-operator-history`.
- **Jessica  Baker et al → Tennessee Aggregates LLC:** 2023-05-25 through current/open; derived from co-tenure at mine 4003284; source `msha-controller-operator-history`.
- **Patti  Baker et al → Tennessee Aggregates LLC:** 2023-05-25 through current/open; derived from co-tenure at mine 4003284; source `msha-controller-operator-history`.
- **Jeremy  Baker et al → Tennessee Aggregates LLC:** 2023-05-25 through current/open; derived from co-tenure at mine 4003284; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 9
- Interval anomalies: 0
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 2 since 2021:** Violations and penalties 6 violation rows across the full record; 0 carry an S&S flag and $712 appears in current assessed amounts.
3. **HEALTH — 9 samples:** Occupational health samples 9 personal. 0 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 6 since 2021:** Inspections 31 inspection events and 286 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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132

## Source coverage

- **Addresses of Record:** 1 rows; 2006-10-13 through 2006-10-13; source ID `msha-addresses`
- **Assessed Violations:** 6 rows; 2012-12-10 through 2024-12-03; source ID `msha-assessed-violations`
- **Controller and Operator History:** 5 rows; 2006-10-12 through 2023-05-25; source ID `msha-controller-operator-history`
- **Inspections:** 31 rows; 2007-06-20 through 2026-03-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 78 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 19 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:** 9 rows; 2010-08-27 through 2024-12-03; source ID `msha-personal-health-samples`
- **Violations:** 6 rows; 2012-12-10 through 2024-12-03; 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/middle-quarry-4003284`
- JSON: `/api/v1/mines/middle-quarry-4003284`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4003284/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4003284/relationships`
- MCP resource: `mine://4003284/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`