# McKelligon Canyon

- **MSHA mine ID:** 4100046
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** El Paso, TX
- **Operator:** GCC Sun City Materials LLC
- **Controller:** GCC SAB de CV
- **Public source rows linked:** 1,778
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**GCC SAB de CV (M10343) → GCC Sun City Materials LLC (0148714) → McKelligon Canyon (4100046)**

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

## Controller and operator valid-time history

- **El Paso Sand Products Inc → El Paso Rock Quarries Inc:** 1950-01-01 through 1983-02-28; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **General Dynamics Corp → El Paso Sand Products Inc:** 1983-03-01 through 1990-08-16; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **Irene  Epperson et al → Jobe Concrete Products Inc:** 1990-08-17 through 1999-03-30; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **Stanley P  Jobe et al → Jobe Concrete Products Inc:** 1990-08-17 through 1999-03-30; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **RMC Group PLC → Jobe Concrete Products Inc:** 1999-03-31 through 2005-02-28; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX El Paso Inc:** 2005-03-01 through 2005-03-29; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials LP:** 2005-03-30 through 2008-08-19; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials South LLC:** 2008-08-20 through 2016-11-18; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.
- **GCC SAB de CV → GCC Sun City Materials LLC:** 2016-11-19 through current/open; derived from co-tenure at mine 4100046; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 25
- 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 — 0 since 2021:** Accidents and injuries 16 historical accident/injury rows; 1 coded fatalities and 171 lost days across the published record.
2. **COMPLIANCE — 68 since 2021:** Violations and penalties 307 violation rows across the full record; 86 carry an S&S flag and $144,967 appears in current assessed amounts.
3. **HEALTH — 69 samples:** Occupational health samples 69 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 35K employee hours and 61 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 56 linked rows:** Contests, conferences and decisions 21 contested-violation rows, 26 civil-penalty docket/decision rows, and 9 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 — 32 since 2021:** Inspections 106 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 56.14112 — 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 56.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **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
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **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 56.15006 — Protective equipment and clothing for hazards and irritants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15006
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002

## Source coverage

- **Accident, Injuries, and Illnesses:** 16 rows; 2000-03-17 through 2020-10-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1972-04-13 through 1972-04-13; source ID `msha-addresses`
- **Assessed Violations:** 306 rows; 2000-08-02 through 2026-05-19; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 26 rows; 2001-10-10 through 2016-04-29; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 9 rows; 2000-08-17 through 2005-03-11; source ID `msha-conferences`
- **Contested Violations:** 21 rows; 2004-11-03 through 2015-03-20; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 678 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 155 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1950-01-01 through 2016-11-19; source ID `msha-controller-operator-history`
- **Inspections:** 106 rows; 2000-08-02 through 2026-07-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 50 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:** 69 rows; 2000-08-09 through 2024-10-09; source ID `msha-personal-health-samples`
- **Violations:** 307 rows; 2000-08-02 through 2026-05-19; 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/mckelligon-canyon-4100046`
- JSON: `/api/v1/mines/mckelligon-canyon-4100046`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4100046/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4100046/relationships`
- MCP resource: `mine://4100046/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`