# Greystone Mine

- **MSHA mine ID:** 2600411
- **Status:** Temporarily Idled
- **Type / commodity:** Surface / Barite Barium Ore
- **Location:** Lander, NV
- **Operator:** M-I Swaco- A Schlumberger Company
- **Controller:** Schlumberger Ltd
- **Public source rows linked:** 993
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Schlumberger Ltd (M10297) → M-I Swaco- A Schlumberger Company (L13501) → Greystone Mine (2600411)**

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

## Controller and operator valid-time history

- **Dresser Industries Inc → Magcobar Minerals Division:** 1950-01-01 through 1992-09-30; derived from co-tenure at mine 2600411; source `msha-controller-operator-history`.
- **Halliburton Co et al → M-I Drilling Fluids Company:** 1992-10-01 through 1994-04-21; derived from co-tenure at mine 2600411; source `msha-controller-operator-history`.
- **Dresser Industries Inc et al → M-I Drilling Fluids Company:** 1992-10-01 through 1994-04-21; derived from co-tenure at mine 2600411; source `msha-controller-operator-history`.
- **Schlumberger Ltd → M-I Swaco- A Schlumberger Company:** 1994-04-22 through current/open; derived from co-tenure at mine 2600411; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 38 historical accident/injury rows; 0 coded fatalities and 1,270 lost days across the published record.
2. **COMPLIANCE — 11 since 2021:** Violations and penalties 174 violation rows across the full record; 35 carry an S&S flag and $52,617 appears in current assessed amounts.
3. **HEALTH — 12 samples:** Occupational health samples 12 personal. 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 23 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 4 civil-penalty docket/decision rows, and 17 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 — 16 since 2021:** Inspections 72 inspection events and 1K 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 47.42 — Label contents.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.42
- **30 CFR 56.4101 — Warning signs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.4102 — Spillage and leakage.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4102
- **30 CFR 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 62.174 — Follow-up corrective measures when a standard threshold shift is detected.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.174
- **30 CFR 56.18014 — Emergency medical assistance and transportation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18014
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 57.4603 — Closure of valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4603

## Source coverage

- **Accident, Injuries, and Illnesses:** 38 rows; 2000-04-26 through 2025-02-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-04-01 through 2026-04-01; source ID `msha-addresses`
- **Assessed Violations:** 174 rows; 2000-06-14 through 2025-07-22; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2004-10-18 through 2012-09-10; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2002-10-04 through 2011-05-24; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2009-10-16 through 2012-03-22; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 87 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 18 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1994-04-22; source ID `msha-controller-operator-history`
- **Inspections:** 72 rows; 2000-03-30 through 2026-09-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 315 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 74 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:** 12 rows; 2003-07-30 through 2026-03-24; source ID `msha-personal-health-samples`
- **Violations:** 174 rows; 2000-06-14 through 2025-07-22; 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/greystone-mine-2600411`
- JSON: `/api/v1/mines/greystone-mine-2600411`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2600411/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2600411/relationships`
- MCP resource: `mine://2600411/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`