# Essroc Cement Corp

- **MSHA mine ID:** 2002461
- **Status:** Abandoned
- **Type / commodity:** Surface / Cement
- **Location:** Bay, MI
- **Operator:** Essroc Cement Corp
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 1,050
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Essroc Cement Corp (L14716) → Essroc Cement Corp (2002461)**

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

## Controller and operator valid-time history

- **Italcementi Spa → Essroc Cement Corp:** 1979-01-01 through 2016-10-11; derived from co-tenure at mine 2002461; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Essroc Cement Corp:** 2016-10-12 through current/open; derived from co-tenure at mine 2002461; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 67 historical accident/injury rows; 0 coded fatalities and 369 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 229 violation rows across the full record; 45 carry an S&S flag and $54,166 appears in current assessed amounts.
3. **HEALTH — 79 samples:** Occupational health samples 79 personal. 18 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 10K employee hours and 21 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 65 linked rows:** Contests, conferences and decisions 24 contested-violation rows, 24 civil-penalty docket/decision rows, and 17 conference records linked by issuance number.
6. **CONTRACTORS — 7 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 67 inspection events and 2K 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 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 56.15003 — Protective footwear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15003
- **30 CFR 56.12002 — Controls and switches.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 56.4603 — Closure of valves.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4603
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.15014 — Eye protection when operating grinding wheels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15014

## Source coverage

- **Accident, Injuries, and Illnesses:** 67 rows; 2000-01-03 through 2009-04-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-07-22 through 2011-07-22; source ID `msha-addresses`
- **Assessed Violations:** 221 rows; 2000-01-04 through 2011-07-21; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 24 rows; 2007-03-20 through 2012-11-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2005-03-02 through 2008-10-01; source ID `msha-conferences`
- **Contested Violations:** 24 rows; 2005-12-06 through 2010-06-17; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 188 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 30 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1979-01-01 through 1979-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 67 rows; 2000-01-04 through 2011-07-12; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 80 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 20 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:** 79 rows; 2000-08-02 through 2009-01-29; source ID `msha-personal-health-samples`
- **Violations:** 229 rows; 2000-01-04 through 2011-07-21; 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/essroc-cement-corp-2002461`
- JSON: `/api/v1/mines/essroc-cement-corp-2002461`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2002461/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2002461/relationships`
- MCP resource: `mine://2002461/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`