# Fort Dodge Mine

- **MSHA mine ID:** 1300032
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Webster, IA
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 4,941
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → Fort Dodge Mine (1300032)**

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

## Controller and operator valid-time history

- **Welp & Mc Carten Inc → Welp & Mc Carten Inc:** 1950-01-01 through 1980-03-05; derived from co-tenure at mine 1300032; source `msha-controller-operator-history`.
- **James W  Weaver et al → Welp & Mc Carten Inc:** 1980-03-06 through 1986-03-31; derived from co-tenure at mine 1300032; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1986-04-01 through 2005-05-18; derived from co-tenure at mine 1300032; 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 1300032; 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 — 8 since 2021:** Accidents and injuries 37 historical accident/injury rows; 0 coded fatalities and 723 lost days across the published record.
2. **COMPLIANCE — 66 since 2021:** Violations and penalties 489 violation rows across the full record; 69 carry an S&S flag and $152,569 appears in current assessed amounts.
3. **HEALTH — 278 samples:** Occupational health samples 269 personal; 9 area. 11 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 27K employee hours and 47 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 38 linked rows:** Contests, conferences and decisions 14 contested-violation rows, 14 civil-penalty docket/decision rows, and 10 conference records linked by issuance number.
6. **CONTRACTORS — 18 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 — 32 since 2021:** Inspections 159 inspection events and 5K 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 57.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.14207 — Parking procedures for unattended equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14207
- **30 CFR 57.12020 — Protection of persons at switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12020
- **30 CFR 57.15001 — First aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15001
- **30 CFR 57.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4201
- **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 57.11058 — Check-in, check-out system.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11058
- **30 CFR 57.15030 — Provision and maintenance of self-rescue devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15030

## Source coverage

- **Accident, Injuries, and Illnesses:** 37 rows; 2000-01-05 through 2025-04-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1974-05-15 through 1974-05-15; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 9 rows; 2008-09-11 through 2026-04-15; source ID `msha-area-samples`
- **Assessed Violations:** 486 rows; 2000-02-15 through 2026-07-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 14 rows; 2011-09-15 through 2023-12-13; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 10 rows; 2000-03-10 through 2023-10-17; source ID `msha-conferences`
- **Contested Violations:** 14 rows; 2010-11-08 through 2022-06-06; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,341 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 576 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2005-05-19; source ID `msha-controller-operator-history`
- **Inspections:** 159 rows; 2000-02-15 through 2026-10-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 423 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:** 269 rows; 2002-11-20 through 2026-04-15; source ID `msha-personal-health-samples`
- **Violations:** 489 rows; 2000-02-15 through 2026-10-07; 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/fort-dodge-mine-1300032`
- JSON: `/api/v1/mines/fort-dodge-mine-1300032`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1300032/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1300032/relationships`
- MCP resource: `mine://1300032/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`