# Jena Aggregates Plant

- **MSHA mine ID:** 1601298
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** La Salle, LA
- **Operator:** Martin Marietta Materials Southwest, LLC
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 481
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials Southwest, LLC (0084984) → Jena Aggregates Plant (1601298)**

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

## Controller and operator valid-time history

- **Bryant W R → Central Sand & Gravel Inc:** 1996-02-01 through 2000-06-11; derived from co-tenure at mine 1601298; source `msha-controller-operator-history`.
- **Texas Industries Inc → Txi (A/K/A Texas Industries Inc):** 2000-06-12 through 2005-03-14; derived from co-tenure at mine 1601298; source `msha-controller-operator-history`.
- **Texas Industries Inc → TXI Operations LP:** 2005-03-15 through 2014-07-01; derived from co-tenure at mine 1601298; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → TXI Operations LP:** 2014-07-02 through 2023-01-22; derived from co-tenure at mine 1601298; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials Southwest, LLC:** 2023-01-23 through current/open; derived from co-tenure at mine 1601298; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 13 historical accident/injury rows; 0 coded fatalities and 141 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 55 violation rows across the full record; 10 carry an S&S flag and $6,710 appears in current assessed amounts.
3. **HEALTH — 31 samples:** Occupational health samples 31 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 962 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 0 since 2021:** Inspections 49 inspection events and 702 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 56.4100 — Smoking and use of open flames.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4100
- **30 CFR 56.18014 — Emergency medical assistance and transportation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18014
- **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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.15001 — First-aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15001
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023

## Source coverage

- **Accident, Injuries, and Illnesses:** 13 rows; 2000-07-07 through 2013-03-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-07-01 through 2019-07-01; source ID `msha-addresses`
- **Assessed Violations:** 51 rows; 2001-08-01 through 2017-10-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2011-07-13 through 2017-05-23; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 4 rows; 2009-12-16 through 2016-12-06; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 60 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 14 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1996-02-01 through 2023-01-23; source ID `msha-controller-operator-history`
- **Inspections:** 49 rows; 2000-03-02 through 2019-04-09; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 153 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 40 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:** 31 rows; 2000-08-01 through 2017-05-10; source ID `msha-personal-health-samples`
- **Violations:** 55 rows; 2001-04-12 through 2017-10-17; 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/jena-aggregates-plant-1601298`
- JSON: `/api/v1/mines/jena-aggregates-plant-1601298`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1601298/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1601298/relationships`
- MCP resource: `mine://1601298/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`