# Bolingbrook Underground

- **MSHA mine ID:** 1103149
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Will, IL
- **Operator:** Vulcan Construction Materials, LLC
- **Controller:** Vulcan Materials Company
- **Public source rows linked:** 2,439
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Vulcan Materials Company (0071891) → Vulcan Construction Materials, LLC (L16168) → Bolingbrook Underground (1103149)**

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

## Controller and operator valid-time history

- **Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC:** 2005-08-15 through 2007-11-15; derived from co-tenure at mine 1103149; source `msha-controller-operator-history`.
- **Vulcan Materials Company → Vulcan Construction Materials, LLC:** 2007-11-16 through current/open; derived from co-tenure at mine 1103149; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 153 lost days across the published record.
2. **COMPLIANCE — 11 since 2021:** Violations and penalties 155 violation rows across the full record; 33 carry an S&S flag and $24,490 appears in current assessed amounts.
3. **HEALTH — 162 samples:** Occupational health samples 156 personal; 6 area. 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 2K employee hours and 6 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 89 linked rows:** Contests, conferences and decisions 38 contested-violation rows, 38 civil-penalty docket/decision rows, and 13 conference records linked by issuance number.
6. **CONTRACTORS — 7 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 — 27 since 2021:** Inspections 97 inspection events and 3K 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 57.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11001
- **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 57.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18002
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 49.8 — Training for mine rescue teams.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-49/subpart-A/section-49.8
- **30 CFR 57.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4201
- **30 CFR 57.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14207
- **30 CFR 57.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 49.6 — Equipment and maintenance requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-49/subpart-A/section-49.6
- **30 CFR 57.4361 — Underground evacuation drills.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4361

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2007-07-23 through 2019-10-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-11-19 through 2013-11-19; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 6 rows; 2009-06-03 through 2016-10-05; source ID `msha-area-samples`
- **Assessed Violations:** 155 rows; 2006-01-10 through 2024-06-04; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 38 rows; 2011-07-02 through 2018-04-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 13 rows; 2006-02-10 through 2017-05-17; source ID `msha-conferences`
- **Contested Violations:** 38 rows; 2010-06-02 through 2017-03-29; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,118 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 272 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2005-08-15 through 2005-08-15; source ID `msha-controller-operator-history`
- **Inspections:** 97 rows; 2005-11-15 through 2026-08-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 305 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 75 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:** 156 rows; 2005-11-15 through 2025-09-16; source ID `msha-personal-health-samples`
- **Violations:** 155 rows; 2006-01-10 through 2024-06-04; 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/bolingbrook-underground-1103149`
- JSON: `/api/v1/mines/bolingbrook-underground-1103149`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1103149/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1103149/relationships`
- MCP resource: `mine://1103149/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`