# Rockdale Quarry

- **MSHA mine ID:** 1102349
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Will, IL
- **Operator:** Joliet Sand & Gravel Company
- **Controller:** Lafarge S A
- **Public source rows linked:** 249
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lafarge S A (M02063) → Joliet Sand & Gravel Company (L34986) → Rockdale Quarry (1102349)**

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

## Controller and operator valid-time history

- **Rein Schultz & Dahl of Illinois Inc  et al → Joliet Sand & Gravel Company:** 1950-01-01 through 2006-04-08; derived from co-tenure at mine 1102349; source `msha-controller-operator-history`.
- **George L Comerford  et al → Joliet Sand & Gravel Company:** 1950-01-01 through 2006-04-08; derived from co-tenure at mine 1102349; source `msha-controller-operator-history`.
- **Lafarge S A → Joliet Sand & Gravel Company:** 2006-04-09 through current/open; derived from co-tenure at mine 1102349; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 6
- 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 6 historical accident/injury rows; 0 coded fatalities and 40 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 69 violation rows across the full record; 17 carry an S&S flag and $5,824 appears in current assessed amounts.
3. **HEALTH — 5 samples:** Occupational health samples 5 personal. 1 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 16 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 8 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 17 inspection events and 302 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 56.17001 — 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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.11009 — Walkways along conveyors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11009
- **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 56.4102 — Spillage and leakage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4102
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9

## Source coverage

- **Accident, Injuries, and Illnesses:** 6 rows; 2000-04-07 through 2002-05-25; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2003-02-05 through 2003-02-05; source ID `msha-addresses`
- **Assessed Violations:** 69 rows; 2000-04-12 through 2002-11-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 8 rows; 2002-08-19 through 2003-05-28; source ID `msha-civil-penalty-dockets-decisions`
- **Contractor Employment and Production — Quarterly:** 30 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 17 rows; 2000-04-12 through 2002-11-26; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 26 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 8 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:** 5 rows; 2001-08-14 through 2002-07-23; source ID `msha-personal-health-samples`
- **Violations:** 69 rows; 2000-04-12 through 2002-11-06; 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/rockdale-quarry-1102349`
- JSON: `/api/v1/mines/rockdale-quarry-1102349`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1102349/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1102349/relationships`
- MCP resource: `mine://1102349/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`