# Portable Plant P-4

- **MSHA mine ID:** 2902122
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Santa Fe, NM
- **Operator:** Lafarge Southwest
- **Controller:** Lafarge S A
- **Public source rows linked:** 473
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Lafarge S A (M02063) → Lafarge Southwest (0051011) → Portable Plant P-4 (2902122)**

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

## Controller and operator valid-time history

- **Larry W  Corn → Corn Construction Company:** 1994-01-01 through 1999-03-31; derived from co-tenure at mine 2902122; source `msha-controller-operator-history`.
- **Lafarge S A → Western Mobile New Mexico Inc:** 1999-04-01 through 2001-12-31; derived from co-tenure at mine 2902122; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Southwest:** 2002-01-01 through current/open; derived from co-tenure at mine 2902122; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 9
- 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 — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 10 violation rows across the full record; 2 carry an S&S flag and $2,088 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 0 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 6K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 3 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 14 inspection events and 284 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 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **30 CFR 56.6306 — Loading, blasting, and security.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6306
- **30 CFR 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **30 CFR 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2003-12-05 through 2003-12-05; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2005-04-11 through 2005-04-11; source ID `msha-addresses`
- **Assessed Violations:** 8 rows; 2000-02-16 through 2004-01-29; source ID `msha-assessed-violations`
- **Conferences:** 3 rows; 2000-03-06 through 2000-11-20; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 334 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 77 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1994-01-01 through 2002-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 14 rows; 2000-02-16 through 2004-04-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 14 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 7 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 10 rows; 2000-02-16 through 2004-01-29; 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/portable-plant-p-4-2902122`
- JSON: `/api/v1/mines/portable-plant-p-4-2902122`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2902122/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2902122/relationships`
- MCP resource: `mine://2902122/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`