# Anderson Property

- **MSHA mine ID:** 4703665
- **Status:** Abandoned
- **Type / commodity:** Surface / Sand, Industrial NEC
- **Location:** Barron, WI
- **Operator:** Piranha Proppant
- **Controller:** Mammoth Energy Services
- **Public source rows linked:** 730
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Mammoth Energy Services (0134001) → Piranha Proppant (0151774) → Anderson Property (4703665)**

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

## Controller and operator valid-time history

- **Chieftain Sand and Proppant LLC → Chieftain Sand and Proppant  Barron, LLC:** 2012-08-02 through 2017-05-25; derived from co-tenure at mine 4703665; source `msha-controller-operator-history`.
- **Mammoth Energy Services → Piranha Proppant:** 2017-05-26 through current/open; derived from co-tenure at mine 4703665; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 — 0 since 2021:** Accidents and injuries 17 historical accident/injury rows; 0 coded fatalities and 174 lost days across the published record.
2. **COMPLIANCE — 12 since 2021:** Violations and penalties 94 violation rows across the full record; 17 carry an S&S flag and $21,684 appears in current assessed amounts.
3. **HEALTH — 25 samples:** Occupational health samples 25 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 — 14 linked rows:** Contests, conferences and decisions 5 contested-violation rows, 5 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 — 11 since 2021:** Inspections 32 inspection events and 484 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 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.9101 — Operating speeds and control of equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9101
- **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 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.14112 — Construction and maintenance of guards.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 17 rows; 2012-09-06 through 2019-06-21; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-08-28 through 2025-08-28; source ID `msha-addresses`
- **Assessed Violations:** 94 rows; 2012-09-19 through 2024-06-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 5 rows; 2013-07-15 through 2020-02-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2014-08-29 through 2024-08-14; source ID `msha-conferences`
- **Contested Violations:** 5 rows; 2012-10-16 through 2019-06-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 234 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 56 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2012-08-02 through 2017-05-26; source ID `msha-controller-operator-history`
- **Inspections:** 32 rows; 2012-09-19 through 2025-03-19; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 129 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 31 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:** 25 rows; 2012-09-26 through 2022-10-26; source ID `msha-personal-health-samples`
- **Violations:** 94 rows; 2012-09-19 through 2024-06-27; 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/anderson-property-4703665`
- JSON: `/api/v1/mines/anderson-property-4703665`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4703665/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4703665/relationships`
- MCP resource: `mine://4703665/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`