# FRIENDSHIP QUARRY

- **MSHA mine ID:** 0900878
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Hall, GA
- **Operator:** Vulcan Construction Materials, LLC
- **Controller:** Vulcan Materials Company
- **Public source rows linked:** 2,062
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Vulcan Materials Company (0071891) → Vulcan Construction Materials, LLC (L16168) → FRIENDSHIP QUARRY (0900878)**

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

## Controller and operator valid-time history

- **Roger H  Brown → Hall Aggregate Company:** 1950-01-01 through 1979-12-31; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Jim Walter Corp → Georgia Marble Company:** 1980-01-01 through 1989-05-30; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Imerys S A → Georgia Marble Aggregates Corp:** 1989-05-31 through 1989-09-13; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Blue Circle Industries Plc → Blue Circle Aggregates Inc:** 1989-09-14 through 2001-07-11; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Aggregates Southeast:** 2001-07-12 through 2010-12-31; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Building Materials, Inc.:** 2011-01-01 through 2013-01-31; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Vulcan Materials Company → Vulcan Construction Materials, LLC:** 2013-02-01 through current/open; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC:** 2013-02-01 through 2007-11-15; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.
- **Holcim Ltd → Lafarge Building Materials, Inc.:** 2015-07-10 through 2013-01-31; derived from co-tenure at mine 0900878; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 25
- Interval anomalies: 2
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 6 since 2021:** Accidents and injuries 35 historical accident/injury rows; 0 coded fatalities and 237 lost days across the published record.
2. **COMPLIANCE — 21 since 2021:** Violations and penalties 111 violation rows across the full record; 26 carry an S&S flag and $17,062 appears in current assessed amounts.
3. **HEALTH — 37 samples:** Occupational health samples 37 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 17K employee hours and 28 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 24 linked rows:** Contests, conferences and decisions 10 contested-violation rows, 10 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 10 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 — 14 since 2021:** Inspections 68 inspection events and 1K 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 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.4203 — Extinguisher recharging or replacement.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4203
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 56.14100 — 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 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023
- **30 CFR 56.3131 — Pit or quarry wall perimeter.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3131

## Source coverage

- **Accident, Injuries, and Illnesses:** 35 rows; 2000-04-18 through 2026-03-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1983-06-06 through 1983-06-06; source ID `msha-addresses`
- **Assessed Violations:** 111 rows; 2001-01-03 through 2025-10-21; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2006-11-09 through 2011-09-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2004-04-16 through 2020-12-14; source ID `msha-conferences`
- **Contested Violations:** 10 rows; 2005-04-11 through 2009-10-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,275 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 273 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1950-01-01 through 2013-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 68 rows; 2001-01-03 through 2026-04-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 37 rows; 2002-06-13 through 2026-03-24; source ID `msha-personal-health-samples`
- **Violations:** 111 rows; 2001-01-03 through 2025-10-21; 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/friendship-quarry-0900878`
- JSON: `/api/v1/mines/friendship-quarry-0900878`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0900878/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0900878/relationships`
- MCP resource: `mine://0900878/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`