# Bluffdale Pit

- **MSHA mine ID:** 4202179
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Utah, UT
- **Operator:** Kilgore Contracting
- **Controller:** Summit Materials LLC
- **Public source rows linked:** 536
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Summit Materials LLC (M02046) → Kilgore Contracting (L01838) → Bluffdale Pit (4202179)**

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

## Controller and operator valid-time history

- **Harvey  Hansen → Asphalt Materials:** 1997-06-01 through 2023-02-02; derived from co-tenure at mine 4202179; source `msha-controller-operator-history`.
- **Harold  Elam → Kilgore Contracting:** 2023-02-03 through 2011-03-31; derived from co-tenure at mine 4202179; source `msha-controller-operator-history`.
- **Summit Materials LLC → Kilgore Contracting:** 2023-02-03 through current/open; derived from co-tenure at mine 4202179; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- Interval anomalies: 1
- 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 — 3 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 1 lost days across the published record.
2. **COMPLIANCE — 57 since 2021:** Violations and penalties 131 violation rows across the full record; 29 carry an S&S flag and $49,047 appears in current assessed amounts.
3. **HEALTH — 22 samples:** Occupational health samples 22 personal. 2 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 15K employee hours and 25 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 29 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 14 civil-penalty docket/decision rows, and 2 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 — 19 since 2021:** Inspections 71 inspection events and 786 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 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 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 56.14100 — 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 56.15001 — First-aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15001

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2019-04-09 through 2025-08-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-05-15 through 2012-05-15; source ID `msha-addresses`
- **Assessed Violations:** 130 rows; 2001-11-21 through 2026-07-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 14 rows; 2025-01-28 through 2026-06-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2021-02-11 through 2025-04-22; source ID `msha-conferences`
- **Contested Violations:** 13 rows; 2024-04-08 through 2024-08-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 8 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 3 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1997-06-01 through 2023-02-03; source ID `msha-controller-operator-history`
- **Inspections:** 71 rows; 2000-01-20 through 2026-07-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 106 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 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; 2005-12-08 through 2026-07-09; source ID `msha-personal-health-samples`
- **Violations:** 131 rows; 2001-11-21 through 2026-07-08; 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/bluffdale-pit-4202179`
- JSON: `/api/v1/mines/bluffdale-pit-4202179`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4202179/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4202179/relationships`
- MCP resource: `mine://4202179/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`