# SUPERIOR MARBLE

- **MSHA mine ID:** 0202921
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Marble
- **Location:** Pinal, AZ
- **Operator:** Superior Marble, LLC
- **Controller:** Gary T  Smith; Michael L  Smith
- **Public source rows linked:** 295
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Gary T  Smith; Michael L  Smith (M11655) → Superior Marble, LLC (L16847) → SUPERIOR MARBLE (0202921)**

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

## Controller and operator valid-time history

- **Gary T  Smith et al → Superior Marble, LLC:** 2001-02-01 through current/open; derived from co-tenure at mine 0202921; source `msha-controller-operator-history`.
- **Michael L  Smith et al → Superior Marble, LLC:** 2001-02-01 through current/open; derived from co-tenure at mine 0202921; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- 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 5 historical accident/injury rows; 0 coded fatalities and 297 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 54 violation rows across the full record; 13 carry an S&S flag and $5,422 appears in current assessed amounts.
3. **HEALTH — 34 samples:** Occupational health samples 34 personal. 5 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 5K employee hours and 27 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 1 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 420 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 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 56.16001 — Stacking and storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16001
- **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 56.5001 — Exposure limits for airborne contaminants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **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 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 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2001-03-14 through 2005-06-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2010-04-23 through 2010-04-23; source ID `msha-addresses`
- **Assessed Violations:** 54 rows; 2002-06-17 through 2010-02-24; source ID `msha-assessed-violations`
- **Conferences:** 1 rows; 2007-10-04 through 2007-10-04; source ID `msha-conferences`
- **Controller and Operator History:** 2 rows; 2001-02-01 through 2001-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2002-06-17 through 2010-02-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 101 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 20 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:** 34 rows; 2002-06-19 through 2009-08-05; source ID `msha-personal-health-samples`
- **Violations:** 54 rows; 2002-06-17 through 2010-02-24; 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/superior-marble-0202921`
- JSON: `/api/v1/mines/superior-marble-0202921`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0202921/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0202921/relationships`
- MCP resource: `mine://0202921/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`