# Portable Crusher #4

- **MSHA mine ID:** 4104845
- **Status:** Intermittent
- **Type / commodity:** Surface / Sand, Common
- **Location:** Donley, TX
- **Operator:** J Lee Milligan Inc
- **Controller:** Doug  Walterscheid
- **Public source rows linked:** 386
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Doug  Walterscheid (0058711) → J Lee Milligan Inc (L02254) → Portable Crusher #4 (4104845)**

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

## Controller and operator valid-time history

- **Doug  Walterscheid et al → J Lee Milligan Inc:** 2011-01-03 through current/open; derived from co-tenure at mine 4104845; source `msha-controller-operator-history`.
- **Ruth S  Wall et al → J Lee Milligan Inc:** 2011-01-03 through 2005-12-22; derived from co-tenure at mine 4104845; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 3 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 290 lost days across the published record.
2. **COMPLIANCE — 24 since 2021:** Violations and penalties 89 violation rows across the full record; 24 carry an S&S flag and $23,203 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 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 845 employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 9 since 2021:** Inspections 33 inspection events and 532 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 56.4201 — 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 56.14112 — 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 56.14132 — 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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.4200 — General requirements.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **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 56.12004 — 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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2016-06-11 through 2025-10-10; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-06-20 through 2022-06-20; source ID `msha-addresses`
- **Assessed Violations:** 89 rows; 2011-03-16 through 2026-03-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2019-10-02 through 2019-10-02; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 3 rows; 2019-03-06 through 2019-03-06; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 2011-01-03 through 2011-01-03; source ID `msha-controller-operator-history`
- **Inspections:** 33 rows; 2011-03-16 through 2026-03-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 120 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:** 8 rows; 2012-06-26 through 2020-07-30; source ID `msha-personal-health-samples`
- **Violations:** 89 rows; 2011-03-16 through 2026-03-05; 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/portable-crusher-4-4104845`
- JSON: `/api/v1/mines/portable-crusher-4-4104845`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104845/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104845/relationships`
- MCP resource: `mine://4104845/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`