# AMES MINE

- **MSHA mine ID:** 1300014
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Story, IA
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 7,848
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → AMES MINE (1300014)**

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

## Controller and operator valid-time history

- **Richard E  Sargent → E I Sargent Quarries Inc:** 1950-01-01 through 1982-04-25; derived from co-tenure at mine 1300014; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1982-04-26 through 2003-01-31; derived from co-tenure at mine 1300014; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials, Inc.:** 2003-02-01 through current/open; derived from co-tenure at mine 1300014; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 63 historical accident/injury rows; 1 coded fatalities and 687 lost days across the published record.
2. **COMPLIANCE — 102 since 2021:** Violations and penalties 639 violation rows across the full record; 132 carry an S&S flag and $224,581 appears in current assessed amounts.
3. **HEALTH — 400 samples:** Occupational health samples 369 personal; 31 area. 42 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 54K employee hours and 91 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 51 linked rows:** Contests, conferences and decisions 20 contested-violation rows, 20 civil-penalty docket/decision rows, and 11 conference records linked by issuance number.
6. **CONTRACTORS — 29 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 — 30 since 2021:** Inspections 187 inspection events and 7K 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 57.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14112
- **30 CFR 57.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11003
- **30 CFR 57.4102 — Spillage and leakage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4102
- **30 CFR 57.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3200
- **30 CFR 57.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11001
- **30 CFR 57.4201 — Inspection.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4201
- **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
- **30 CFR 57.4260 — Underground self-propelled equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4260
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 63 rows; 2000-02-23 through 2023-05-31; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-01-09 through 1976-01-09; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 31 rows; 2009-08-26 through 2022-10-25; source ID `msha-area-samples`
- **Assessed Violations:** 636 rows; 2000-05-03 through 2026-07-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 20 rows; 2011-10-12 through 2019-06-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 11 rows; 2003-06-10 through 2019-07-11; source ID `msha-conferences`
- **Contested Violations:** 20 rows; 2010-05-24 through 2019-01-03; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 4,323 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,012 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 2003-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 187 rows; 2000-01-12 through 2026-07-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 424 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 108 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:** 369 rows; 2002-05-30 through 2026-04-22; source ID `msha-personal-health-samples`
- **Violations:** 639 rows; 2000-05-03 through 2026-07-14; 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/ames-mine-1300014`
- JSON: `/api/v1/mines/ames-mine-1300014`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1300014/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1300014/relationships`
- MCP resource: `mine://1300014/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`