# Federal Underground

- **MSHA mine ID:** 1102814
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Cook, IL
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 4,672
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials Midwest Agg, Inc. (L16286) → Federal Underground (1102814)**

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

## Controller and operator valid-time history

- **General Dynamics Corp → Hanson Material Service:** 1984-11-01 through 2006-06-15; derived from co-tenure at mine 1102814; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Material Service:** 2006-06-16 through 2007-08-22; derived from co-tenure at mine 1102814; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Hanson Material Service:** 2007-08-23 through 2021-01-31; derived from co-tenure at mine 1102814; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials Midwest Agg, Inc.:** 2021-02-01 through current/open; derived from co-tenure at mine 1102814; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials Midwest Agg, Inc.:** 2021-02-01 through 2007-08-22; derived from co-tenure at mine 1102814; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- 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 — 9 since 2021:** Accidents and injuries 18 historical accident/injury rows; 0 coded fatalities and 551 lost days across the published record.
2. **COMPLIANCE — 167 since 2021:** Violations and penalties 305 violation rows across the full record; 55 carry an S&S flag and $75,372 appears in current assessed amounts.
3. **HEALTH — 122 samples:** Occupational health samples 112 personal; 10 area. 5 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 19K employee hours and 28 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 8 contested-violation rows, 8 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 19 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 — 39 since 2021:** Inspections 86 inspection events and 3K 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14109
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4104
- **30 CFR 57.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4201
- **30 CFR 57.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 57.14132 — Horns and backup alarms for surface equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14132
- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **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 50.20-1 — General instructions for completing MSHA Form 7000-1.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-1
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 18 rows; 2016-03-21 through 2026-07-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-04-02 through 2014-04-02; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 10 rows; 2022-09-01 through 2024-11-20; source ID `msha-area-samples`
- **Assessed Violations:** 301 rows; 2004-03-11 through 2026-07-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 8 rows; 2017-04-20 through 2026-06-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2016-10-13 through 2016-10-13; source ID `msha-conferences`
- **Contested Violations:** 8 rows; 2016-08-23 through 2025-07-31; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,954 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 649 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1984-11-01 through 2021-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 86 rows; 2004-03-10 through 2026-07-13; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 183 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 30 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:** 112 rows; 2014-09-11 through 2024-11-20; source ID `msha-personal-health-samples`
- **Violations:** 305 rows; 2004-03-11 through 2026-07-28; 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/federal-underground-1102814`
- JSON: `/api/v1/mines/federal-underground-1102814`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1102814/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1102814/relationships`
- MCP resource: `mine://1102814/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`