# Black Butte Mine

- **MSHA mine ID:** 2402423
- **Status:** Intermittent
- **Type / commodity:** Surface / Iron Ore
- **Location:** Meagher, MT
- **Operator:** GCC Trident LLC
- **Controller:** GCC SAB de CV
- **Public source rows linked:** 424
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**GCC SAB de CV (M10343) → GCC Trident LLC (0158814) → Black Butte Mine (2402423)**

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

## Controller and operator valid-time history

- **Holcim Ltd → Holcim (US) Inc:** 2005-08-31 through 2015-07-09; derived from co-tenure at mine 2402423; source `msha-controller-operator-history`.
- **Holcim Ltd → Holcim (US) Inc:** 2015-07-10 through 2015-07-31; derived from co-tenure at mine 2402423; source `msha-controller-operator-history`.
- **CRH PLC → CRH US:** 2015-08-01 through 2018-06-22; derived from co-tenure at mine 2402423; source `msha-controller-operator-history`.
- **GCC SAB de CV → GCC Trident LLC:** 2018-06-23 through current/open; derived from co-tenure at mine 2402423; source `msha-controller-operator-history`.
- **Amrize Ltd → Holcim (US) Inc:** 2025-06-23 through 2015-07-31; derived from co-tenure at mine 2402423; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 16 violation rows across the full record; 2 carry an S&S flag and $1,916 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 1 personal; 1 area. 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 144 employee hours and 5 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 3 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 1 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 — 3 since 2021:** Inspections 30 inspection events and 272 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 50.30 — 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 56.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3200
- **30 CFR 48.23 — Training plans; time of submission; where filed; information required; time for approval; method for disapproval; commencement of training; approval of instructors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.23
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 47.54 — Availability of an MSDS.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-F/section-47.54
- **30 CFR 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 56.18013 — Emergency communications system.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18013
- **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 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103

## Source coverage

- **Addresses of Record:** 1 rows; 2024-05-03 through 2024-05-03; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 1 rows; 2016-10-25 through 2016-10-25; source ID `msha-area-samples`
- **Assessed Violations:** 16 rows; 2005-09-28 through 2018-10-29; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2010-09-23 through 2010-09-23; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2007-08-07 through 2007-08-07; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2009-10-26 through 2009-10-26; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 142 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 27 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2005-08-31 through 2018-06-23; source ID `msha-controller-operator-history`
- **Inspections:** 30 rows; 2005-09-28 through 2026-09-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 143 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 38 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:** 1 rows; 2010-07-20 through 2010-07-20; source ID `msha-personal-health-samples`
- **Violations:** 16 rows; 2005-09-28 through 2018-10-29; 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/black-butte-mine-2402423`
- JSON: `/api/v1/mines/black-butte-mine-2402423`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2402423/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2402423/relationships`
- MCP resource: `mine://2402423/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`