# ACE Portable Plant

- **MSHA mine ID:** 3102302
- **Status:** Active
- **Type / commodity:** Facility / Sand, Industrial NEC
- **Location:** Liberty, TX
- **Operator:** ACE Industrial Sands LLC
- **Controller:** Paul T  Ayres
- **Public source rows linked:** 221
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Paul T  Ayres (M02473) → ACE Industrial Sands LLC (0145034) → ACE Portable Plant (3102302)**

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

## Controller and operator valid-time history

- **Paul T  Ayres → ACE Industrial Sands LLC:** 2016-03-24 through current/open; derived from co-tenure at mine 3102302; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 — 4 since 2021:** Accidents and injuries 7 historical accident/injury rows; 0 coded fatalities and 96 lost days across the published record.
2. **COMPLIANCE — 21 since 2021:** Violations and penalties 35 violation rows across the full record; 10 carry an S&S flag and $5,019 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 personal. 1 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 2K employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 — 15 since 2021:** Inspections 29 inspection events and 376 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 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **30 CFR 50.20-7 — Criteria—MSHA Form 7000-1, Section D.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-7
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **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 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **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 56.14107 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2017-03-10 through 2024-06-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2016-10-01 through 2016-10-01; source ID `msha-addresses`
- **Assessed Violations:** 35 rows; 2016-08-17 through 2026-04-07; source ID `msha-assessed-violations`
- **Controller and Operator History:** 1 rows; 2016-03-24 through 2016-03-24; source ID `msha-controller-operator-history`
- **Inspections:** 29 rows; 2016-08-17 through 2026-04-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 82 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 22 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; 2019-08-08 through 2026-04-08; source ID `msha-personal-health-samples`
- **Violations:** 35 rows; 2016-08-17 through 2026-04-07; 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/ace-portable-plant-3102302`
- JSON: `/api/v1/mines/ace-portable-plant-3102302`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3102302/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3102302/relationships`
- MCP resource: `mine://3102302/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`