# Liberty Aggregates LLC

- **MSHA mine ID:** 2302513
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Clay, MO
- **Operator:** Liberty Aggregates LLC
- **Controller:** Chris  Limpus; Harlan  Limpus; Wayne  Adolphsen
- **Public source rows linked:** 1,777
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Chris  Limpus; Harlan  Limpus; Wayne  Adolphsen (0180382) → Liberty Aggregates LLC (0149033) → Liberty Aggregates LLC (2302513)**

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

## Controller and operator valid-time history

- **Chris  Limpus et al → Liberty Aggregates LLC:** 2017-01-11 through 2018-11-03; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Wayne  Adolphsen et al → Liberty Aggregates LLC:** 2017-01-11 through 2018-11-03; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Harlan  Limpus et al → Liberty Aggregates LLC:** 2017-01-11 through 2018-11-03; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Chris  Limpus et al → Liberty Aggregates LLC:** 2018-11-04 through 2021-05-17; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Harlan  Limpus et al → Liberty Aggregates LLC:** 2018-11-04 through 2021-05-17; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Chris  Limpus et al → Liberty Aggregates LLC:** 2021-05-18 through 2023-10-30; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Harlan  Limpus et al → Liberty Aggregates LLC:** 2021-05-18 through 2023-10-30; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Jeff H  Burton et al → Liberty Aggregates LLC:** 2021-05-18 through 2023-10-30; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Wayne  Adolphsen et al → Liberty Aggregates LLC:** 2021-05-18 through 2023-10-30; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Harlan  Limpus et al → Liberty Aggregates LLC:** 2023-10-31 through current/open; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Chris  Limpus et al → Liberty Aggregates LLC:** 2023-10-31 through current/open; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.
- **Wayne  Adolphsen et al → Liberty Aggregates LLC:** 2023-10-31 through current/open; derived from co-tenure at mine 2302513; source `msha-controller-operator-history`.

- History rows: 12
- Typed edges: 17
- 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 2 historical accident/injury rows; 0 coded fatalities and 2 lost days across the published record.
2. **COMPLIANCE — 111 since 2021:** Violations and penalties 231 violation rows across the full record; 57 carry an S&S flag and $122,905 appears in current assessed amounts.
3. **HEALTH — 221 samples:** Occupational health samples 205 personal; 16 area. 11 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 13K employee hours and 23 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 21 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 — 43 since 2021:** Inspections 80 inspection events and 2K 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 57.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18002
- **30 CFR 57.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14112
- **30 CFR 57.11004 — Portable rigid ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11004
- **30 CFR 57.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 57.4361 — Underground evacuation drills.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4361
- **30 CFR 57.14207 — Parking procedures for unattended equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14207
- **30 CFR 57.8518 — Main and booster fans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8518
- **30 CFR 57.4460 — Storage of flammable liquids underground.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4460
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 57.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-U/section-57.23002
- **30 CFR 57.8520 — Ventilation plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8520

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2018-11-29 through 2019-12-18; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2017-02-07 through 2017-02-07; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 16 rows; 2019-04-17 through 2026-09-22; source ID `msha-area-samples`
- **Assessed Violations:** 225 rows; 2017-03-21 through 2026-08-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2019-01-04 through 2023-02-17; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2018-04-26 through 2022-07-20; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2018-01-30 through 2021-12-01; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 674 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 171 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 12 rows; 2017-01-11 through 2017-01-11; source ID `msha-controller-operator-history`
- **Inspections:** 80 rows; 2017-03-20 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 108 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 30 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:** 205 rows; 2017-08-30 through 2026-09-22; source ID `msha-personal-health-samples`
- **Violations:** 231 rows; 2017-03-21 through 2026-10-07; 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/liberty-aggregates-llc-2302513`
- JSON: `/api/v1/mines/liberty-aggregates-llc-2302513`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2302513/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2302513/relationships`
- MCP resource: `mine://2302513/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`