# Blasted Rock Quarry

- **MSHA mine ID:** 0405364
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Plumas, CA
- **Operator:** R & J Joy, Inc. dba Joy Engineering
- **Controller:** Rick  Joy
- **Public source rows linked:** 417
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Rick  Joy (0040602) → R & J Joy, Inc. dba Joy Engineering (0050173) → Blasted Rock Quarry (0405364)**

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

## Controller and operator valid-time history

- **Diamond S Corp et al → Sierra Aggregates:** 1999-02-01 through 2009-12-31; derived from co-tenure at mine 0405364; source `msha-controller-operator-history`.
- **Albert L  Folchi et al → Sierra Aggregates:** 1999-02-01 through 2009-12-31; derived from co-tenure at mine 0405364; source `msha-controller-operator-history`.
- **Elsie (Maylou)  Smith et al → The Blasted Rock Quarry:** 2010-01-01 through 2014-11-16; derived from co-tenure at mine 0405364; source `msha-controller-operator-history`.
- **Jimmy Wayne  Smith et al → The Blasted Rock Quarry:** 2010-01-01 through 2014-11-16; derived from co-tenure at mine 0405364; source `msha-controller-operator-history`.
- **Rick  Joy → Joy Engineering:** 2014-11-17 through current/open; derived from co-tenure at mine 0405364; 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 7 historical accident/injury rows; 0 coded fatalities and 38 lost days across the published record.
2. **COMPLIANCE — 13 since 2021:** Violations and penalties 47 violation rows across the full record; 10 carry an S&S flag and $5,355 appears in current assessed amounts.
3. **HEALTH — 13 samples:** Occupational health samples 13 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 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 — 8 since 2021:** Inspections 41 inspection events and 429 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 56.23004 — Record and inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23004
- **30 CFR 56.18010 — First aid.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **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 56.14110 — Flying or falling materials.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14110
- **30 CFR 56.11027 — Scaffolds and working platforms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11027
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2004-04-27 through 2018-05-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-06-28 through 2022-06-28; source ID `msha-addresses`
- **Assessed Violations:** 47 rows; 2001-07-31 through 2025-02-26; source ID `msha-assessed-violations`
- **Controller and Operator History:** 5 rows; 1999-02-01 through 2014-11-17; source ID `msha-controller-operator-history`
- **Inspections:** 41 rows; 2000-08-02 through 2026-01-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 203 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 52 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:** 13 rows; 2003-06-17 through 2025-08-14; source ID `msha-personal-health-samples`
- **Violations:** 47 rows; 2001-07-31 through 2025-02-26; 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/blasted-rock-quarry-0405364`
- JSON: `/api/v1/mines/blasted-rock-quarry-0405364`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0405364/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0405364/relationships`
- MCP resource: `mine://0405364/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`