# Tacoma Plant

- **MSHA mine ID:** 4503290
- **Status:** Active
- **Type / commodity:** Facility / Lime
- **Location:** Pierce, WA
- **Operator:** Graymont Western US Inc
- **Controller:** Graymont Ltd
- **Public source rows linked:** 1,382
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Graymont Ltd (M00218) → Graymont Western US Inc (L11495) → Tacoma Plant (4503290)**

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

## Controller and operator valid-time history

- **Graymont Ltd → Graymont Western US Inc:** 1993-04-01 through current/open; derived from co-tenure at mine 4503290; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 37 historical accident/injury rows; 0 coded fatalities and 174 lost days across the published record.
2. **COMPLIANCE — 21 since 2021:** Violations and penalties 314 violation rows across the full record; 64 carry an S&S flag and $89,070 appears in current assessed amounts.
3. **HEALTH — 91 samples:** Occupational health samples 91 personal. 2 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 23K employee hours and 43 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 86 linked rows:** Contests, conferences and decisions 39 contested-violation rows, 41 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 — 21 since 2021:** Inspections 93 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 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 56.23003 — Requirements for written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23003
- **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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 37 rows; 2000-02-22 through 2025-10-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2018-01-19 through 2018-01-19; source ID `msha-addresses`
- **Assessed Violations:** 313 rows; 2001-04-23 through 2026-06-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 41 rows; 2004-07-29 through 2013-11-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 6 rows; 2002-12-12 through 2016-03-15; source ID `msha-conferences`
- **Contested Violations:** 39 rows; 2009-07-31 through 2013-02-12; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 300 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 67 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 1993-04-01 through 1993-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 93 rows; 2001-04-23 through 2026-09-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 91 rows; 2001-08-21 through 2026-09-15; source ID `msha-personal-health-samples`
- **Violations:** 314 rows; 2001-04-23 through 2026-06-08; 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/tacoma-plant-4503290`
- JSON: `/api/v1/mines/tacoma-plant-4503290`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4503290/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4503290/relationships`
- MCP resource: `mine://4503290/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`