# Blair East

- **MSHA mine ID:** 4703599
- **Status:** Active
- **Type / commodity:** Surface / Sand, Industrial NEC
- **Location:** Trempealeau, WI
- **Operator:** Source Energy Services Proppants, LP
- **Controller:** Scott  Melbourn; Shawn  Furlong
- **Public source rows linked:** 1,946
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Scott  Melbourn; Shawn  Furlong (0177361) → Source Energy Services Proppants, LP (0130273) → Blair East (4703599)**

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

## Controller and operator valid-time history

- **Harold  Derksen et al → Winn Bay Sand LP:** 2010-12-08 through 2011-12-14; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Ochapowacc First Nation et al → Winn Bay Sand LP:** 2010-12-08 through 2011-12-14; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Mike  O'Neill et al → Preferred Sands of Wisconsin LLC:** 2011-12-15 through 2015-07-13; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Preferred Intermediate Holding Company, LLC → Preferred Proppants LLC.:** 2015-07-14 through 2017-11-06; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Brad  Thompson et al → Source Energy Services Proppants, LP:** 2017-11-07 through 2021-04-30; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Jim  McMahon et al → Source Energy Services Proppants, LP:** 2017-11-07 through 2021-04-30; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Brad  Thompson → Source Energy Services Proppants, LP:** 2021-05-01 through 2022-09-30; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Scott  Melbourn → Source Energy Services Proppants, LP:** 2022-10-01 through current/open; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.
- **Shawn  Furlong → Source Energy Services Proppants, LP:** 2022-10-01 through current/open; derived from co-tenure at mine 4703599; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 19
- 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 — 2 since 2021:** Accidents and injuries 21 historical accident/injury rows; 0 coded fatalities and 41 lost days across the published record.
2. **COMPLIANCE — 46 since 2021:** Violations and penalties 133 violation rows across the full record; 17 carry an S&S flag and $25,615 appears in current assessed amounts.
3. **HEALTH — 46 samples:** Occupational health samples 46 personal. 4 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 33K employee hours and 70 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 29 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 17 conference records linked by issuance number.
6. **CONTRACTORS — 8 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 — 15 since 2021:** Inspections 43 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 56.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **30 CFR 56.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.4203 — Extinguisher recharging or replacement.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4203
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **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 56.12032 — 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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.15014 — Eye protection when operating grinding wheels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15014
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 21 rows; 2012-02-27 through 2026-07-31; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-07-15 through 2012-07-15; source ID `msha-addresses`
- **Assessed Violations:** 133 rows; 2011-08-09 through 2026-03-31; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2014-09-29 through 2014-09-29; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2012-11-07 through 2020-01-22; source ID `msha-conferences`
- **Contested Violations:** 6 rows; 2014-03-03 through 2014-03-05; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,138 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 237 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 2010-12-08 through 2017-11-07; source ID `msha-controller-operator-history`
- **Inspections:** 43 rows; 2011-08-09 through 2026-04-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 123 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 32 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:** 46 rows; 2011-08-10 through 2026-02-18; source ID `msha-personal-health-samples`
- **Violations:** 133 rows; 2011-08-09 through 2026-03-31; 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/blair-east-4703599`
- JSON: `/api/v1/mines/blair-east-4703599`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4703599/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4703599/relationships`
- MCP resource: `mine://4703599/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`