# New Melle Mine

- **MSHA mine ID:** 2302043
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** St Charles, MO
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 3,052
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → New Melle Mine (2302043)**

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

## Controller and operator valid-time history

- **Fred Weber, Inc. → Fred Weber Inc:** 1991-06-01 through 2013-03-25; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.
- **Fred Weber, Inc. → Bluff City Minerals, LLC:** 2013-03-26 through 2021-06-30; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.
- **42 North Resources Partners II LP et al → New Frontier Materials Operations Alpha, LLC:** 2021-07-01 through 2026-06-14; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.
- **RWNIH-OP Holdings LLC et al → New Frontier Materials Operations Alpha, LLC:** 2021-07-01 through 2026-06-14; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.
- **PEPI Capital, L.P. et al → New Frontier Materials Operations Alpha, LLC:** 2021-07-01 through 2026-06-14; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials, Inc.:** 2026-06-15 through current/open; derived from co-tenure at mine 2302043; source `msha-controller-operator-history`.

- History rows: 6
- 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 — 13 since 2021:** Accidents and injuries 36 historical accident/injury rows; 0 coded fatalities and 321 lost days across the published record.
2. **COMPLIANCE — 94 since 2021:** Violations and penalties 252 violation rows across the full record; 56 carry an S&S flag and $56,042 appears in current assessed amounts.
3. **HEALTH — 359 samples:** Occupational health samples 342 personal; 17 area. 32 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 21K employee hours and 37 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 57 linked rows:** Contests, conferences and decisions 18 contested-violation rows, 18 civil-penalty docket/decision rows, and 21 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 — 50 since 2021:** Inspections 160 inspection events and 4K 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 57.15001 — First aid materials.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15001
- **30 CFR 57.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4101
- **30 CFR 57.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12018
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14207
- **30 CFR 57.3200 — Correction of hazardous conditions.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3200
- **30 CFR 57.6905 — Protection of explosive material.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-E/section-57.6905
- **30 CFR 57.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20011
- **30 CFR 57.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-L/section-57.13015
- **30 CFR 57.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100

## Source coverage

- **Accident, Injuries, and Illnesses:** 36 rows; 2002-10-29 through 2024-10-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-04-01 through 2013-04-01; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 17 rows; 2015-06-17 through 2026-04-30; source ID `msha-area-samples`
- **Assessed Violations:** 241 rows; 2000-01-26 through 2026-07-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 18 rows; 2014-04-24 through 2019-10-31; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 21 rows; 2001-01-25 through 2026-10-06; source ID `msha-conferences`
- **Contested Violations:** 18 rows; 2013-07-22 through 2019-03-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,219 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 232 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1991-06-01 through 2026-06-15; source ID `msha-controller-operator-history`
- **Inspections:** 160 rows; 2000-01-26 through 2026-10-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 388 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 100 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:** 342 rows; 2003-02-20 through 2026-04-30; source ID `msha-personal-health-samples`
- **Violations:** 252 rows; 2000-01-26 through 2026-10-06; 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/new-melle-mine-2302043`
- JSON: `/api/v1/mines/new-melle-mine-2302043`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2302043/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2302043/relationships`
- MCP resource: `mine://2302043/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`