# Conrock North Pit

- **MSHA mine ID:** 5001282
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Matanuska-Susitna, AK
- **Operator:** Granite Construction Company
- **Controller:** Granite Construction Inc
- **Public source rows linked:** 488
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Granite Construction Inc (M00079) → Granite Construction Company (L00039) → Conrock North Pit (5001282)**

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

## Controller and operator valid-time history

- **Conrock Company Inc → Conrock Company Inc:** 1979-01-01 through 1980-10-28; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.
- **Mapco Inc → Central Paving Products:** 1980-10-29 through 1985-09-19; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.
- **Phil  Godfrey et al → Rogers & Babler:** 1985-09-20 through 1987-08-27; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.
- **Barclay  Tollefson et al → Rogers & Babler:** 1985-09-20 through 1987-08-27; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.
- **Donald M  March et al → Wilder Construction Company:** 1987-08-28 through 2008-04-03; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.
- **Granite Construction Inc → Granite Construction Company:** 2008-04-04 through current/open; derived from co-tenure at mine 5001282; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 16
- 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 19 historical accident/injury rows; 1 coded fatalities and 116 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 77 violation rows across the full record; 18 carry an S&S flag and $8,910 appears in current assessed amounts.
3. **HEALTH — 16 samples:** Occupational health samples 16 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 6K employee hours and 13 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 7 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 — 10 since 2021:** Inspections 37 inspection events and 558 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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.14107 — Moving machine parts.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 19 rows; 2000-03-24 through 2019-09-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-04-03 through 2012-04-03; source ID `msha-addresses`
- **Assessed Violations:** 74 rows; 2001-06-20 through 2017-10-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2009-04-27 through 2009-04-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2003-07-11 through 2017-11-13; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2007-11-20 through 2007-11-20; source ID `msha-contested-violations`
- **Controller and Operator History:** 6 rows; 1979-01-01 through 2008-04-04; source ID `msha-controller-operator-history`
- **Inspections:** 37 rows; 2000-07-22 through 2026-09-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 196 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 52 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:** 16 rows; 2001-06-21 through 2026-09-16; source ID `msha-personal-health-samples`
- **Violations:** 77 rows; 2001-06-20 through 2017-10-03; 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/conrock-north-pit-5001282`
- JSON: `/api/v1/mines/conrock-north-pit-5001282`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5001282/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5001282/relationships`
- MCP resource: `mine://5001282/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`