# KC-Portable 2

- **MSHA mine ID:** 4801625
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Salt Lake, UT
- **Operator:** Kilgore Contracting, LLC
- **Controller:** Summit Materials LLC
- **Public source rows linked:** 150
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Summit Materials LLC (M02046) → Kilgore Contracting, LLC (L01838) → KC-Portable 2 (4801625)**

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

## Controller and operator valid-time history

- **EnerCrest Inc → EnerCrest Products Inc:** 2002-07-09 through 2010-09-28; derived from co-tenure at mine 4801625; source `msha-controller-operator-history`.
- **Summit Materials LLC → Wind River Materials, LLC.:** 2010-09-29 through 2014-04-13; derived from co-tenure at mine 4801625; source `msha-controller-operator-history`.
- **Harold  Elam → Kilgore Contracting, LLC:** 2014-04-14 through 2011-03-31; derived from co-tenure at mine 4801625; source `msha-controller-operator-history`.
- **Summit Materials LLC → Kilgore Contracting, LLC:** 2014-04-14 through current/open; derived from co-tenure at mine 4801625; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 18 violation rows across the full record; 2 carry an S&S flag and $2,834 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 219 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 0 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 — 0 since 2021:** Inspections 22 inspection events and 186 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 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 56.4201 — 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 56.14132 — 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 41.12 — Changes; notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.11001 — Safe access.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008

## Source coverage

- **Addresses of Record:** 1 rows; 2014-07-01 through 2014-07-01; source ID `msha-addresses`
- **Assessed Violations:** 18 rows; 2002-07-09 through 2012-11-29; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2013-10-25 through 2013-10-25; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 3 rows; 2012-11-29 through 2012-11-29; source ID `msha-contested-violations`
- **Controller and Operator History:** 4 rows; 2002-07-09 through 2014-04-14; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2002-07-09 through 2012-12-19; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 64 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 14 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:** 2 rows; 2010-07-01 through 2011-10-19; source ID `msha-personal-health-samples`
- **Violations:** 18 rows; 2002-07-09 through 2012-11-29; 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/kc-portable-2-4801625`
- JSON: `/api/v1/mines/kc-portable-2-4801625`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4801625/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4801625/relationships`
- MCP resource: `mine://4801625/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`