# Richardson Mine

- **MSHA mine ID:** 3800719
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Marion, SC
- **Operator:** American Materials Company, LLC
- **Controller:** Quikrete Holdings Inc.
- **Public source rows linked:** 435
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Quikrete Holdings Inc. (M12812) → American Materials Company, LLC (L17115) → Richardson Mine (3800719)**

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

## Controller and operator valid-time history

- **Gary (Tim)  Bizzell  et al → American Materials Company of South Carolina LLC:** 2008-06-13 through 2016-02-23; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.
- **Summit Materials LLC → American Materials Company:** 2016-02-24 through 2016-02-24; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.
- **Summit Materials LLC → American Materials Company, LLC:** 2016-02-25 through 2025-08-03; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.
- **Gary (Tim)  Bizzell  et al → American Materials Company, LLC:** 2016-02-25 through 2016-02-04; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.
- **CRH PLC → American Materials Company:** 2022-05-14 through 2016-02-24; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.
- **Quikrete Holdings Inc. → American Materials Company, LLC:** 2025-08-04 through current/open; derived from co-tenure at mine 3800719; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 15
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 6 since 2021:** Violations and penalties 40 violation rows across the full record; 5 carry an S&S flag and $6,245 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 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 8K employee hours and 12 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 49 inspection events and 557 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 56.14209 — Safety procedures for towing.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14209
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **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 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.14112 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2016-10-16 through 2016-10-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-06-13 through 2008-06-13; source ID `msha-addresses`
- **Assessed Violations:** 40 rows; 2008-09-03 through 2026-03-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2014-01-23 through 2014-01-23; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2020-04-15 through 2020-04-15; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2013-06-12 through 2013-06-12; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 110 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 30 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 2008-06-13 through 2016-02-25; source ID `msha-controller-operator-history`
- **Inspections:** 49 rows; 2008-09-02 through 2026-07-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 114 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 31 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:** 8 rows; 2008-09-03 through 2023-04-04; source ID `msha-personal-health-samples`
- **Violations:** 40 rows; 2008-09-03 through 2026-03-03; 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/richardson-mine-3800719`
- JSON: `/api/v1/mines/richardson-mine-3800719`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3800719/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3800719/relationships`
- MCP resource: `mine://3800719/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`