# Kayenta Preparation Plant

- **MSHA mine ID:** 0201047
- **Status:** Abandoned and Sealed
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Navajo, AZ
- **Operator:** Black Mesa Pipeline Operations LLC
- **Controller:** ONEOK Partners L P
- **Public source rows linked:** 1,107
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**ONEOK Partners L P (0064791) → Black Mesa Pipeline Operations LLC (P23552) → Kayenta Preparation Plant (0201047)**

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

## Controller and operator valid-time history

- **Southern Pacific Pipe Lines Inc → Black Mesa Pipeline Inc:** 1950-01-01 through 1986-09-29; derived from co-tenure at mine 0201047; source `msha-controller-operator-history`.
- **Santa Fe Southern Pacific Corp → Black Mesa Pipeline Inc:** 1986-09-30 through 1988-05-16; derived from co-tenure at mine 0201047; source `msha-controller-operator-history`.
- **Prudential Insurance Co Of America et al → Black Mesa Pipeline Inc:** 1988-05-17 through 1996-08-28; derived from co-tenure at mine 0201047; source `msha-controller-operator-history`.
- **Northern Border Partners LP → Black Mesa Pipeline Operations LLC:** 1996-08-29 through 2006-11-30; derived from co-tenure at mine 0201047; source `msha-controller-operator-history`.
- **ONEOK Partners L P → Black Mesa Pipeline Operations LLC:** 2006-12-01 through current/open; derived from co-tenure at mine 0201047; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 13 historical accident/injury rows; 0 coded fatalities and 247 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 35 violation rows across the full record; 2 carry an S&S flag and $2,144 appears in current assessed amounts.
3. **HEALTH — 88 samples:** Occupational health samples 50 coal dust; 38 noise. 0 personal-sample rows have a published C/E ratio above 1; 3 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 15K employee hours and 34 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 36 inspection events and 481 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 77.502-2 — Electric equipment; frequency of examination and testing.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502-2
- **30 CFR 77.502 — Electric equipment; examination, testing, and maintenance.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502
- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.202 — Dust accumulations in surface installations.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.202
- **30 CFR 77.514 — Switchboards; passageways and clearance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.514
- **30 CFR 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.401 — Stationary grinding machines; protective devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.401
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 13 rows; 2000-04-30 through 2005-05-05; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-02-29 through 2008-02-29; source ID `msha-addresses`
- **Assessed Violations:** 35 rows; 2000-02-20 through 2007-04-05; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 50 rows; 2000-06-20 through 2005-12-22; source ID `msha-coal-dust-samples`
- **Conferences:** 6 rows; 2000-04-18 through 2002-11-21; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 705 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 142 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 1996-08-29; source ID `msha-controller-operator-history`
- **Inspections:** 36 rows; 2000-03-04 through 2008-02-29; 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:** 16 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 38 rows; 2001-08-15 through 2006-05-09; source ID `msha-noise-samples`
- **Violations:** 35 rows; 2000-02-20 through 2007-04-05; 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/kayenta-preparation-plant-0201047`
- JSON: `/api/v1/mines/kayenta-preparation-plant-0201047`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0201047/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0201047/relationships`
- MCP resource: `mine://0201047/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`