# Makakilo Quarry

- **MSHA mine ID:** 5100173
- **Status:** Active
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** Honolulu, HI
- **Operator:** Grace Pacific LLC
- **Controller:** Nan Inc
- **Public source rows linked:** 831
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Nan Inc (0181520) → Grace Pacific LLC (L07273) → Makakilo Quarry (5100173)**

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

## Controller and operator valid-time history

- **Baker Hughes Inc → Pacific Concrete & Rock Company Ltd:** 1950-01-01 through 1984-04-16; derived from co-tenure at mine 5100173; source `msha-controller-operator-history`.
- **Grace Pacific Corp → Grace Pacific LLC:** 1984-04-17 through 2013-09-30; derived from co-tenure at mine 5100173; source `msha-controller-operator-history`.
- **Alexander & Baldwin Incorporated → Grace Pacific LLC:** 2013-10-01 through 2023-11-14; derived from co-tenure at mine 5100173; source `msha-controller-operator-history`.
- **Nan Inc → Grace Pacific LLC:** 2023-11-15 through current/open; derived from co-tenure at mine 5100173; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 4 since 2021:** Accidents and injuries 69 historical accident/injury rows; 0 coded fatalities and 1,582 lost days across the published record.
2. **COMPLIANCE — 24 since 2021:** Violations and penalties 203 violation rows across the full record; 33 carry an S&S flag and $38,459 appears in current assessed amounts.
3. **HEALTH — 22 samples:** Occupational health samples 22 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 23K employee hours and 44 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 47 linked rows:** Contests, conferences and decisions 20 contested-violation rows, 20 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 13 since 2021:** Inspections 64 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 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 46.6 — Newly hired experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.6
- **30 CFR 56.14201 — Conveyor start-up warnings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14201
- **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 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12006
- **30 CFR 56.3131 — Pit or quarry wall perimeter.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3131
- **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 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100

## Source coverage

- **Accident, Injuries, and Illnesses:** 69 rows; 2000-03-20 through 2026-07-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-07-15 through 1976-07-15; source ID `msha-addresses`
- **Assessed Violations:** 203 rows; 2000-03-07 through 2026-05-26; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 20 rows; 2011-05-17 through 2020-07-13; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2006-04-13 through 2023-07-20; source ID `msha-conferences`
- **Contested Violations:** 20 rows; 2008-07-10 through 2019-12-11; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 98 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 20 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1984-04-17; source ID `msha-controller-operator-history`
- **Inspections:** 64 rows; 2000-01-11 through 2026-05-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 63 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:** 22 rows; 2005-05-23 through 2023-12-12; source ID `msha-personal-health-samples`
- **Violations:** 203 rows; 2000-03-07 through 2026-05-26; 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/makakilo-quarry-5100173`
- JSON: `/api/v1/mines/makakilo-quarry-5100173`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5100173/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5100173/relationships`
- MCP resource: `mine://5100173/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`