# LOCKPORT MINE

- **MSHA mine ID:** 1515452
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Henry, KY
- **Operator:** Liter's Inc.
- **Controller:** John G Liter
- **Public source rows linked:** 2,178
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**John G Liter (0189800) → Liter's Inc. (L17929) → LOCKPORT MINE (1515452)**

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

## Controller and operator valid-time history

- **Robert T  Liter et al → Liter'S Quarry Inc:** 1985-11-01 through 2004-03-18; derived from co-tenure at mine 1515452; source `msha-controller-operator-history`.
- **Robert T  Liter et al → Liter's Inc.:** 2004-03-19 through 2025-01-08; derived from co-tenure at mine 1515452; source `msha-controller-operator-history`.
- **John G Liter → Liter's Inc.:** 2025-01-09 through current/open; derived from co-tenure at mine 1515452; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 — 1 since 2021:** Accidents and injuries 9 historical accident/injury rows; 0 coded fatalities and 404 lost days across the published record.
2. **COMPLIANCE — 59 since 2021:** Violations and penalties 222 violation rows across the full record; 62 carry an S&S flag and $34,424 appears in current assessed amounts.
3. **HEALTH — 369 samples:** Occupational health samples 344 personal; 25 area. 17 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 11K employee hours and 21 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 — 1 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 — 37 since 2021:** Inspections 158 inspection events and 4K 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 57.4100 — Smoking and use of open flames.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4100
- **30 CFR 57.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4104
- **30 CFR 57.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-P/section-57.17001
- **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 57.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14101
- **30 CFR 57.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.12069 — Lightning protection for telephone wires and ungrounded conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12069
- **30 CFR 57.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12008

## Source coverage

- **Accident, Injuries, and Illnesses:** 9 rows; 2004-09-24 through 2021-01-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-07-29 through 2013-07-29; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 25 rows; 2009-05-13 through 2026-04-16; source ID `msha-area-samples`
- **Assessed Violations:** 220 rows; 2000-01-25 through 2026-08-18; source ID `msha-assessed-violations`
- **Contractor Employment and Production — Quarterly:** 586 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 137 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1985-11-01 through 2004-03-19; source ID `msha-controller-operator-history`
- **Inspections:** 158 rows; 2000-01-25 through 2026-08-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 384 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 88 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:** 344 rows; 2001-08-07 through 2026-04-16; source ID `msha-personal-health-samples`
- **Violations:** 222 rows; 2000-01-25 through 2026-08-18; 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/lockport-mine-1515452`
- JSON: `/api/v1/mines/lockport-mine-1515452`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1515452/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1515452/relationships`
- MCP resource: `mine://1515452/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`