# Fernley Operations

- **MSHA mine ID:** 2601950
- **Status:** Active
- **Type / commodity:** Surface / Diatomaceous Earth (Diatomite)
- **Location:** Churchill, NV
- **Operator:** U.S. Silica Company, LLC
- **Controller:** USS Holdings Inc
- **Public source rows linked:** 1,520
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**USS Holdings Inc (M11007) → U.S. Silica Company, LLC (L14417) → Fernley Operations (2601950)**

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

## Controller and operator valid-time history

- **W M  Gurley → Moltan Company:** 1986-02-01 through 1994-10-06; derived from co-tenure at mine 2601950; source `msha-controller-operator-history`.
- **Cheryl  Followell et al → Moltan Company:** 1994-10-07 through 2013-01-31; derived from co-tenure at mine 2601950; source `msha-controller-operator-history`.
- **EP Management Corporation → EP Minerals, LLC:** 2013-02-01 through 2019-05-13; derived from co-tenure at mine 2601950; source `msha-controller-operator-history`.
- **Eagle-Picher Industries Inc → EP Minerals, LLC:** 2013-02-01 through 2010-02-14; derived from co-tenure at mine 2601950; source `msha-controller-operator-history`.
- **USS Holdings Inc → U.S. Silica Company, LLC:** 2019-05-14 through current/open; derived from co-tenure at mine 2601950; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 — 2 since 2021:** Accidents and injuries 64 historical accident/injury rows; 0 coded fatalities and 609 lost days across the published record.
2. **COMPLIANCE — 26 since 2021:** Violations and penalties 297 violation rows across the full record; 61 carry an S&S flag and $91,695 appears in current assessed amounts.
3. **HEALTH — 58 samples:** Occupational health samples 58 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 12K employee hours and 36 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 292 linked rows:** Contests, conferences and decisions 125 contested-violation rows, 151 civil-penalty docket/decision rows, and 16 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 — 14 since 2021:** Inspections 86 inspection events and 2K 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 47.41 — Requirement for container labels.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.4201 — Inspection.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 64 rows; 2000-06-15 through 2023-03-01; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1990-05-04 through 1990-05-04; source ID `msha-addresses`
- **Assessed Violations:** 291 rows; 2000-01-27 through 2026-01-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 151 rows; 2001-04-25 through 2013-06-19; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 16 rows; 2000-02-22 through 2002-09-23; source ID `msha-conferences`
- **Contested Violations:** 125 rows; 2005-02-01 through 2012-09-12; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 24 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:** 5 rows; 1986-02-01 through 2019-05-14; source ID `msha-controller-operator-history`
- **Inspections:** 86 rows; 2000-01-27 through 2026-07-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 58 rows; 2003-03-27 through 2026-01-28; source ID `msha-personal-health-samples`
- **Violations:** 297 rows; 2000-01-27 through 2026-01-27; 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/fernley-operations-2601950`
- JSON: `/api/v1/mines/fernley-operations-2601950`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2601950/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2601950/relationships`
- MCP resource: `mine://2601950/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`