# Stansbury Mine

- **MSHA mine ID:** 4801012
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Sweetwater, WY
- **Operator:** New Stansbury Coal Company LLC
- **Controller:** Steve  Robson; Randall D  Peterson
- **Public source rows linked:** 211
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Steve  Robson; Randall D  Peterson (0055909) → New Stansbury Coal Company LLC (0066643) → Stansbury Mine (4801012)**

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

## Controller and operator valid-time history

- **Ideal Basic Industries Inc & Union Pacific Corp → Winton Coal Company:** 1974-01-01 through 1987-08-31; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Nearburg Eugene E → Bitter Creek Resources Inc:** 1987-09-01 through 1989-07-13; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Ashland Inc et al → Arch Of Wyoming Llc:** 1989-07-14 through 1996-04-11; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Union Pacific Corp Et Al → Rock Springs Royalty Company:** 1996-04-12 through 2005-08-31; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Randall D  Peterson et al → New Stansbury Coal Company LLC:** 2005-09-01 through current/open; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Steve  Robson et al → New Stansbury Coal Company LLC:** 2005-09-01 through current/open; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.
- **Arch Resources Inc → Arch Of Wyoming Llc:** 2006-04-05 through 1996-04-11; derived from co-tenure at mine 4801012; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 18
- Interval anomalies: 1
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 40 violation rows across the full record; 7 carry an S&S flag and $9,450 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 357 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 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 22 inspection events and 312 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 77.1701 — Emergency communications; requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1701
- **30 CFR 77.1104 — Accumulations of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104
- **30 CFR 71.603 — Drinking water; dispensing requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-G/section-71.603
- **30 CFR 48.26 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.26
- **30 CFR 77.512 — Inspection and cover plates.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.512
- **30 CFR 77.516 — Electric wiring and equipment; installation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.516
- **30 CFR 77.1101 — Escape and evacuation; plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1101
- **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 77.502 — Electric equipment; examination, testing, and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502

## Source coverage

- **Addresses of Record:** 1 rows; 2007-03-12 through 2007-03-12; source ID `msha-addresses`
- **Assessed Violations:** 32 rows; 2001-03-27 through 2006-08-31; source ID `msha-assessed-violations`
- **Contractor Employment and Production — Quarterly:** 73 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 16 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1974-01-01 through 2005-09-01; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2000-01-07 through 2008-01-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 13 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 40 rows; 2000-12-14 through 2006-08-31; 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/stansbury-mine-4801012`
- JSON: `/api/v1/mines/stansbury-mine-4801012`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4801012/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4801012/relationships`
- MCP resource: `mine://4801012/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`