# Stockton Preparation Facility

- **MSHA mine ID:** 3609210
- **Status:** Active
- **Type / commodity:** Facility / Coal (Anthracite)
- **Location:** Luzerne, PA
- **Operator:** Atlantic Carbon Group, Inc.
- **Controller:** PT BUMA Internasional Grup Tbk
- **Public source rows linked:** 1,492
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**PT BUMA Internasional Grup Tbk (0186221) → Atlantic Carbon Group, Inc. (P22318) → Stockton Preparation Facility (3609210)**

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

## Controller and operator valid-time history

- **Stockton Anthracite LLC et al → Stockton Anthracite LP:** 2004-02-10 through 2009-12-31; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.
- **Pen Carb Incorporated → Atlantic Carbon Group, Inc.:** 2010-01-01 through 2007-11-12; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.
- **Atlantic Carbon Group PLC → Atlantic Carbon Group, Inc.:** 2010-01-01 through 2020-07-16; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.
- **Bell Denis Inc → Atlantic Carbon Group, Inc.:** 2010-01-01 through 2003-04-30; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.
- **ACG Holdco LLC → Atlantic Carbon Group, Inc.:** 2020-07-17 through 2024-06-25; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.
- **PT BUMA Internasional Grup Tbk → Atlantic Carbon Group, Inc.:** 2024-06-26 through current/open; derived from co-tenure at mine 3609210; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 14
- Interval anomalies: 2
- 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 — 4 since 2021:** Accidents and injuries 24 historical accident/injury rows; 0 coded fatalities and 756 lost days across the published record.
2. **COMPLIANCE — 108 since 2021:** Violations and penalties 218 violation rows across the full record; 105 carry an S&S flag and $66,050 appears in current assessed amounts.
3. **HEALTH — 778 samples:** Occupational health samples 525 coal dust; 103 coal quartz; 150 noise. 0 personal-sample rows have a published C/E ratio above 1; 28 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 30 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 4 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 — 33 since 2021:** Inspections 94 inspection events and 3K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 0 short tons
- **Labor hours:** 20,355
- **Average employees:** 9
- **Coal supply region:** Appalachia Northern
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.200 — Surface installations; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.200
- **30 CFR 77.1713 — Daily inspection of surface coal mine; certified person; reports of inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1713
- **30 CFR 77.513 — Insulating mats at power switches.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.513
- **30 CFR 77.205 — Travelways at surface installations.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.400 — Mechanical equipment guards.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400

## Source coverage

- **Accident, Injuries, and Illnesses:** 24 rows; 2007-11-29 through 2025-09-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-04-05 through 2022-04-05; source ID `msha-addresses`
- **Assessed Violations:** 204 rows; 2007-03-07 through 2026-05-01; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 525 rows; 2007-03-13 through 2026-07-10; source ID `msha-coal-dust-samples`
- **Conferences:** 4 rows; 2009-06-03 through 2019-05-08; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 5 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 2 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 2004-02-10 through 2010-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 94 rows; 2006-09-14 through 2026-09-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 125 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 30 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 150 rows; 2007-03-19 through 2026-04-27; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 103 rows; 2007-09-12 through 2026-04-27; source ID `msha-quartz-samples`
- **Violations:** 218 rows; 2007-03-07 through 2026-08-27; 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/stockton-preparation-facility-3609210`
- JSON: `/api/v1/mines/stockton-preparation-facility-3609210`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3609210/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3609210/relationships`
- MCP resource: `mine://3609210/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`