# Troy West Quarry

- **MSHA mine ID:** 2302324
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Lincoln, MO
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 1,228
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → Troy West Quarry (2302324)**

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

## Controller and operator valid-time history

- **Michael  Steiniger et al → Tri County Quarry:** 2005-08-05 through 2010-12-31; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Foresight Development et al → Tri County Quarry:** 2005-08-05 through 2010-12-31; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Joe  Rivet et al → Bedrock Quarry LLC:** 2011-01-01 through 2020-12-31; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Michael  Steiniger et al → Bedrock Quarry LLC:** 2011-01-01 through 2020-12-31; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Michael  Steiniger et al → Bedrock Quarry LLC:** 2021-01-01 through 2024-04-30; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **John  Follmer et al → Bedrock Quarry LLC:** 2021-01-01 through 2024-04-30; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Vincent  Scognamiglio et al → Bedrock Quarry LLC:** 2021-01-01 through 2024-04-30; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **Michael  Steiniger → Bedrock Quarry LLC:** 2024-05-01 through 2025-06-30; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **RWNIH-OP Holdings LLC et al → New Frontier Materials Beta, LLC:** 2025-07-01 through 2026-06-14; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **42 North Resources Partners II LP et al → New Frontier Materials Beta, LLC:** 2025-07-01 through 2026-06-14; derived from co-tenure at mine 2302324; source `msha-controller-operator-history`.
- **PEPI Capital, L.P. et al → New Frontier Materials Beta, LLC:** 2025-07-01 through 2026-06-14; derived from co-tenure at mine 2302324; 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 2302324; source `msha-controller-operator-history`.

- History rows: 12
- Typed edges: 22
- 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 — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 76 lost days across the published record.
2. **COMPLIANCE — 49 since 2021:** Violations and penalties 178 violation rows across the full record; 51 carry an S&S flag and $76,920 appears in current assessed amounts.
3. **HEALTH — 61 samples:** Occupational health samples 61 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 3K employee hours and 11 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 43 linked rows:** Contests, conferences and decisions 18 contested-violation rows, 18 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 — 20 since 2021:** Inspections 69 inspection events and 952 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 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12006
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2026-03-18 through 2026-03-18; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2005-12-12 through 2005-12-12; source ID `msha-addresses`
- **Assessed Violations:** 174 rows; 2006-01-23 through 2026-05-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 18 rows; 2011-11-18 through 2025-06-26; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2016-10-20 through 2022-12-09; source ID `msha-conferences`
- **Contested Violations:** 18 rows; 2010-04-20 through 2024-12-19; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 312 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 64 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 12 rows; 2005-08-05 through 2026-06-15; source ID `msha-controller-operator-history`
- **Inspections:** 69 rows; 2006-01-23 through 2026-05-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 247 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 65 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:** 61 rows; 2006-01-25 through 2025-10-29; source ID `msha-personal-health-samples`
- **Violations:** 178 rows; 2006-01-23 through 2026-05-05; 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/troy-west-quarry-2302324`
- JSON: `/api/v1/mines/troy-west-quarry-2302324`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2302324/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2302324/relationships`
- MCP resource: `mine://2302324/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`