# 443 C R Crusher

- **MSHA mine ID:** 2103238
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Swift, MN
- **Operator:** Commerford Gravel Inc
- **Controller:** Marie  Commerford; Todd  Commerford
- **Public source rows linked:** 313
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Marie  Commerford; Todd  Commerford (0199941) → Commerford Gravel Inc (L17338) → 443 C R Crusher (2103238)**

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

## Controller and operator valid-time history

- **Norman  Commerford  et al → Commerford Gravel Inc:** 2000-05-01 through 2026-05-04; derived from co-tenure at mine 2103238; source `msha-controller-operator-history`.
- **Marie  Commerford  et al → Commerford Gravel Inc:** 2000-05-01 through 2026-05-04; derived from co-tenure at mine 2103238; source `msha-controller-operator-history`.
- **Marie  Commerford et al → Commerford Gravel Inc:** 2026-05-05 through current/open; derived from co-tenure at mine 2103238; source `msha-controller-operator-history`.
- **Todd  Commerford et al → Commerford Gravel Inc:** 2026-05-05 through current/open; derived from co-tenure at mine 2103238; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 7
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 3 since 2021:** Violations and penalties 34 violation rows across the full record; 6 carry an S&S flag and $4,278 appears in current assessed amounts.
3. **HEALTH — 9 samples:** Occupational health samples 9 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 526 employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 2 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 34 inspection events and 301 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 56.14112 — 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 62.120 — Action level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.120
- **30 CFR 56.9300 — Berms or guardrails.** (2 retained recent rows) — 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.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12013 — Splices and repairs of power cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12013
- **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
- **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **30 CFR 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000

## Source coverage

- **Addresses of Record:** 1 rows; 2000-05-09 through 2000-05-09; source ID `msha-addresses`
- **Assessed Violations:** 33 rows; 2000-05-09 through 2024-09-24; source ID `msha-assessed-violations`
- **Conferences:** 2 rows; 2016-09-08 through 2016-09-08; source ID `msha-conferences`
- **Controller and Operator History:** 4 rows; 2000-05-01 through 2000-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 34 rows; 2000-05-09 through 2026-08-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 154 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 41 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:** 9 rows; 2016-07-20 through 2025-08-26; source ID `msha-personal-health-samples`
- **Violations:** 34 rows; 2000-05-09 through 2026-08-25; 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/443-c-r-crusher-2103238`
- JSON: `/api/v1/mines/443-c-r-crusher-2103238`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2103238/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2103238/relationships`
- MCP resource: `mine://2103238/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`