# GREENWOOD QUARRY

- **MSHA mine ID:** 2300141
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cass, MO
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 1,718
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → GREENWOOD QUARRY (2300141)**

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

## Controller and operator valid-time history

- **J M  Millett → Mc Kee Quarries Company Inc:** 1950-01-01 through 1990-04-30; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1990-05-01 through 2005-01-31; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc et al → Hunt Martin Materials LLC:** 2005-02-01 through 2008-01-14; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.
- **Hunt Midwest Enterprises et al → Hunt Martin Materials LLC:** 2005-02-01 through 2008-01-14; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials, Inc.:** 2008-01-15 through current/open; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Hunt Martin Materials LLC:** 2014-04-03 through 2008-01-14; derived from co-tenure at mine 2300141; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 14
- 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 — 3 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 444 lost days across the published record.
2. **COMPLIANCE — 35 since 2021:** Violations and penalties 131 violation rows across the full record; 23 carry an S&S flag and $30,594 appears in current assessed amounts.
3. **HEALTH — 50 samples:** Occupational health samples 50 personal. 6 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 16K employee hours and 28 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 53 linked rows:** Contests, conferences and decisions 23 contested-violation rows, 23 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 — 15 since 2021:** Inspections 71 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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
- **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 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2003-11-18 through 2024-10-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1975-07-01 through 1975-07-01; source ID `msha-addresses`
- **Assessed Violations:** 131 rows; 2001-07-31 through 2026-05-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 23 rows; 2011-04-04 through 2021-10-20; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2019-12-16 through 2025-08-13; source ID `msha-conferences`
- **Contested Violations:** 23 rows; 2009-10-20 through 2021-01-07; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 689 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 171 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1950-01-01 through 2008-01-15; source ID `msha-controller-operator-history`
- **Inspections:** 71 rows; 2001-07-31 through 2026-05-11; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 50 rows; 2004-07-21 through 2026-05-12; source ID `msha-personal-health-samples`
- **Violations:** 131 rows; 2001-07-31 through 2026-05-12; 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/greenwood-quarry-2300141`
- JSON: `/api/v1/mines/greenwood-quarry-2300141`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2300141/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2300141/relationships`
- MCP resource: `mine://2300141/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`