# APPLETON QUARRY

- **MSHA mine ID:** 2300070
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cape Girardeau, MO
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 167
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → APPLETON QUARRY (2300070)**

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

## Controller and operator valid-time history

- **R C  Schnurbusch → Farmers Limestone Company Inc:** 1950-01-01 through 1988-03-14; derived from co-tenure at mine 2300070; source `msha-controller-operator-history`.
- **Richard  Hurst  et al → Farmers Limestone Company:** 1988-03-15 through 1997-02-25; derived from co-tenure at mine 2300070; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1997-02-26 through 2005-05-18; derived from co-tenure at mine 2300070; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials, Inc.:** 2005-05-19 through current/open; derived from co-tenure at mine 2300070; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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 3 historical accident/injury rows; 0 coded fatalities and 116 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 6 violation rows across the full record; 1 carry an S&S flag and $484 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 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 4K employee hours and 7 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 — 0 since 2021:** Inspections 16 inspection events and 209 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 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2000-07-10 through 2006-01-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-02-01 through 2008-02-01; source ID `msha-addresses`
- **Assessed Violations:** 6 rows; 2000-10-11 through 2007-03-22; source ID `msha-assessed-violations`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2005-05-19; source ID `msha-controller-operator-history`
- **Inspections:** 16 rows; 2000-10-10 through 2007-12-12; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 96 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 24 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:** 10 rows; 2003-04-02 through 2005-05-18; source ID `msha-personal-health-samples`
- **Violations:** 6 rows; 2000-10-11 through 2007-03-22; 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/appleton-quarry-2300070`
- JSON: `/api/v1/mines/appleton-quarry-2300070`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2300070/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2300070/relationships`
- MCP resource: `mine://2300070/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`