# San Saba Quarry

- **MSHA mine ID:** 4105431
- **Status:** Active
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** San Saba, TX
- **Operator:** Imperial Products Supply, LLC
- **Controller:** Claudett  Espinoza; Juan  Diosdado
- **Public source rows linked:** 220
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Claudett  Espinoza; Juan  Diosdado (0152261) → Imperial Products Supply, LLC (0167733) → San Saba Quarry (4105431)**

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

## Controller and operator valid-time history

- **Mariano  Rodriguez et al → San Felipe Stone Inc:** 2019-05-09 through 2020-05-26; derived from co-tenure at mine 4105431; source `msha-controller-operator-history`.
- **Juvencio  Armenta et al → San Felipe Stone Inc:** 2019-05-09 through 2020-05-26; derived from co-tenure at mine 4105431; source `msha-controller-operator-history`.
- **Margarito  Espinoza → IPS San Felipe Stone, LLC:** 2020-05-27 through 2022-10-31; derived from co-tenure at mine 4105431; source `msha-controller-operator-history`.
- **Juan  Diosdado et al → Imperial Products Supply, LLC:** 2022-11-01 through current/open; derived from co-tenure at mine 4105431; source `msha-controller-operator-history`.
- **Claudett  Espinoza et al → Imperial Products Supply, LLC:** 2022-11-01 through current/open; derived from co-tenure at mine 4105431; 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 45 since 2021:** Violations and penalties 56 violation rows across the full record; 17 carry an S&S flag and $31,334 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 7K employee hours and 12 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 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 — 19 since 2021:** Inspections 24 inspection events and 239 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 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **30 CFR 56.15003 — Protective footwear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15003
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.16004 — Containers for hazardous materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16004
- **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 56.14132 — 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 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **30 CFR 56.4130 — Electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4130
- **30 CFR 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5

## Source coverage

- **Addresses of Record:** 1 rows; 2019-10-23 through 2019-10-23; source ID `msha-addresses`
- **Assessed Violations:** 56 rows; 2019-08-07 through 2026-04-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2025-04-17 through 2025-04-17; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 1 rows; 2024-06-25 through 2024-06-25; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 2019-05-09 through 2022-11-01; source ID `msha-controller-operator-history`
- **Inspections:** 24 rows; 2019-08-07 through 2026-05-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 58 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 15 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; 2021-03-31 through 2021-03-31; source ID `msha-personal-health-samples`
- **Violations:** 56 rows; 2019-08-07 through 2026-04-28; 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/san-saba-quarry-4105431`
- JSON: `/api/v1/mines/san-saba-quarry-4105431`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4105431/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4105431/relationships`
- MCP resource: `mine://4105431/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`