# Redding Plant

- **MSHA mine ID:** 0400034
- **Status:** Active
- **Type / commodity:** Surface / Cement
- **Location:** Shasta, CA
- **Operator:** CalPortland Company
- **Controller:** Taiheiyo Cement Corp
- **Public source rows linked:** 7,170
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Taiheiyo Cement Corp (M07897) → CalPortland Company (L11900) → Redding Plant (0400034)**

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

## Controller and operator valid-time history

- **Flintkote Company → Flintkote Cement Company:** 1950-01-01 through 1980-04-06; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.
- **Cimenteries Cbr Cementbedrijven → Calaveras Cement Company:** 1980-04-07 through 1999-12-31; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Lehigh Southwest Cement Company:** 2000-01-01 through 2021-04-30; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Lehigh Cement West LLC:** 2021-05-01 through 2021-09-30; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Lehigh Cement West LLC:** 2021-10-01 through 2022-06-30; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.
- **Taiheiyo Cement Corp → CalPortland Company:** 2022-07-01 through current/open; derived from co-tenure at mine 0400034; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 17
- 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 — 22 since 2021:** Accidents and injuries 157 historical accident/injury rows; 0 coded fatalities and 4,638 lost days across the published record.
2. **COMPLIANCE — 306 since 2021:** Violations and penalties 1,213 violation rows across the full record; 228 carry an S&S flag and $1,201,087 appears in current assessed amounts.
3. **HEALTH — 48 samples:** Occupational health samples 48 personal. 3 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 32K employee hours and 69 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 346 linked rows:** Contests, conferences and decisions 152 contested-violation rows, 152 civil-penalty docket/decision rows, and 42 conference records linked by issuance number.
6. **CONTRACTORS — 27 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 — 40 since 2021:** Inspections 156 inspection events and 6K 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 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **30 CFR 56.12068 — Locking transformer enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12068
- **30 CFR 56.16001 — Stacking and storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16001
- **30 CFR 56.17001 — Illumination of surface working areas.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9

## Source coverage

- **Accident, Injuries, and Illnesses:** 157 rows; 2000-02-21 through 2026-09-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-06-06 through 2023-06-06; source ID `msha-addresses`
- **Assessed Violations:** 1,204 rows; 2000-06-27 through 2026-07-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 152 rows; 2008-05-08 through 2025-03-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 42 rows; 2002-08-07 through 2024-09-17; source ID `msha-conferences`
- **Contested Violations:** 152 rows; 2007-02-14 through 2024-06-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,963 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 676 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1950-01-01 through 2022-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 156 rows; 2000-06-27 through 2026-07-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 48 rows; 2003-02-26 through 2024-12-18; source ID `msha-personal-health-samples`
- **Violations:** 1,213 rows; 2000-06-27 through 2026-07-08; 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/redding-plant-0400034`
- JSON: `/api/v1/mines/redding-plant-0400034`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0400034/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0400034/relationships`
- MCP resource: `mine://0400034/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`