# Airport Pit

- **MSHA mine ID:** 0201221
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Graham, AZ
- **Operator:** W W Clyde & Co.
- **Controller:** CCI  (Clyde Companies Inc)
- **Public source rows linked:** 1,142
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CCI  (Clyde Companies Inc) (M04084) → W W Clyde & Co. (L05064) → Airport Pit (0201221)**

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

## Controller and operator valid-time history

- **David D  Cluff  et al → CKC Materials Division:** 1950-01-01 through 2017-05-31; derived from co-tenure at mine 0201221; source `msha-controller-operator-history`.
- **David  Cluff et al → CKC CONSTRUCTION:** 2017-06-01 through 2026-05-31; derived from co-tenure at mine 0201221; source `msha-controller-operator-history`.
- **Justin  Cluff et al → CKC CONSTRUCTION:** 2017-06-01 through 2026-05-31; derived from co-tenure at mine 0201221; source `msha-controller-operator-history`.
- **Brian  Cluff et al → CKC CONSTRUCTION:** 2017-06-01 through 2026-05-31; derived from co-tenure at mine 0201221; source `msha-controller-operator-history`.
- **CCI  (Clyde Companies Inc) → W W Clyde & Co.:** 2026-06-01 through current/open; derived from co-tenure at mine 0201221; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- 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 — 1 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 88 lost days across the published record.
2. **COMPLIANCE — 12 since 2021:** Violations and penalties 282 violation rows across the full record; 110 carry an S&S flag and $96,515 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 11 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 3K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 217 linked rows:** Contests, conferences and decisions 67 contested-violation rows, 121 civil-penalty docket/decision rows, and 29 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 — 13 since 2021:** Inspections 73 inspection events and 1K 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 56.14132 — 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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.14112 — Construction and maintenance of guards.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.12028 — 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 56.4201 — 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 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2006-06-12 through 2024-03-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-04-01 through 2012-04-01; source ID `msha-addresses`
- **Assessed Violations:** 281 rows; 2002-06-21 through 2026-04-01; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 121 rows; 2003-09-23 through 2019-10-23; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 29 rows; 2002-11-22 through 2006-01-27; source ID `msha-conferences`
- **Contested Violations:** 67 rows; 2002-06-21 through 2019-05-07; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2026-06-01; source ID `msha-controller-operator-history`
- **Inspections:** 73 rows; 2000-02-03 through 2026-03-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 11 rows; 2011-10-20 through 2026-04-01; source ID `msha-personal-health-samples`
- **Violations:** 282 rows; 2002-06-21 through 2026-04-01; 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/airport-pit-0201221`
- JSON: `/api/v1/mines/airport-pit-0201221`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0201221/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0201221/relationships`
- MCP resource: `mine://0201221/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`