# Smart Sand Blair LLC

- **MSHA mine ID:** 4703759
- **Status:** Active
- **Type / commodity:** Surface / Sand, Industrial NEC
- **Location:** Trempealeau, WI
- **Operator:** Smart Sand Blair LLC
- **Controller:** Smart Sand Inc
- **Public source rows linked:** 1,596
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Smart Sand Inc (0103037) → Smart Sand Blair LLC (0183833) → Smart Sand Blair LLC (4703759)**

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

## Controller and operator valid-time history

- **Hi-Crush Proppants LLC → Hi-Crush Blair LLC:** 2015-06-04 through 2012-08-22; derived from co-tenure at mine 4703759; source `msha-controller-operator-history`.
- **Hi-Crush Inc → Hi-Crush Blair LLC:** 2015-06-04 through 2022-03-03; derived from co-tenure at mine 4703759; source `msha-controller-operator-history`.
- **Smart Sand Inc → Smart Sand Blair LLC:** 2022-03-04 through current/open; derived from co-tenure at mine 4703759; source `msha-controller-operator-history`.
- **HC Minerals Inc → Hi-Crush Blair LLC:** 2024-08-05 through 2022-03-03; derived from co-tenure at mine 4703759; source `msha-controller-operator-history`.
- **Iron Oak Energy Solutions LLC → Hi-Crush Blair LLC:** 2025-08-11 through 2022-03-03; derived from co-tenure at mine 4703759; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 12
- Interval anomalies: 3
- 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 — 5 since 2021:** Accidents and injuries 20 historical accident/injury rows; 0 coded fatalities and 81 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 76 violation rows across the full record; 11 carry an S&S flag and $33,265 appears in current assessed amounts.
3. **HEALTH — 18 samples:** Occupational health samples 18 personal. 3 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 36K employee hours and 64 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 9 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 29 inspection events and 601 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 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.18002 — Examination of working places.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.14101 — 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 56.14105 — Procedures during repairs or maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14105
- **30 CFR 56.11016 — Snow and ice on walkways and travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11016
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001

## Source coverage

- **Accident, Injuries, and Illnesses:** 20 rows; 2016-04-13 through 2026-03-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-10-28 through 2025-10-28; source ID `msha-addresses`
- **Assessed Violations:** 75 rows; 2015-11-30 through 2026-05-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2016-07-07 through 2016-08-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2016-01-11 through 2024-10-22; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2015-12-01 through 2016-03-02; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,067 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 168 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2015-06-04 through 2022-03-04; source ID `msha-controller-operator-history`
- **Inspections:** 29 rows; 2015-10-28 through 2026-05-19; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 101 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 26 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:** 18 rows; 2016-10-05 through 2026-05-20; source ID `msha-personal-health-samples`
- **Violations:** 76 rows; 2015-11-30 through 2026-05-28; 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/smart-sand-blair-llc-4703759`
- JSON: `/api/v1/mines/smart-sand-blair-llc-4703759`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4703759/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4703759/relationships`
- MCP resource: `mine://4703759/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`