# Erda

- **MSHA mine ID:** 4202613
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Tooele, UT
- **Operator:** StoneRiver Materials
- **Controller:** Jeff V  Anderson
- **Public source rows linked:** 303
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Jeff V  Anderson (0199581) → StoneRiver Materials (0208553) → Erda (4202613)**

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

## Controller and operator valid-time history

- **Kolby  Anderson et al → Rhine Construction:** 2013-09-05 through 2026-03-30; derived from co-tenure at mine 4202613; source `msha-controller-operator-history`.
- **Sharkol LLC et al → Rhine Construction:** 2013-09-05 through 2026-03-30; derived from co-tenure at mine 4202613; source `msha-controller-operator-history`.
- **Jeff V  Anderson → StoneRiver Materials:** 2026-03-31 through current/open; derived from co-tenure at mine 4202613; source `msha-controller-operator-history`.

- History rows: 3
- 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 — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 25 lost days across the published record.
2. **COMPLIANCE — 57 since 2021:** Violations and penalties 69 violation rows across the full record; 10 carry an S&S flag and $26,201 appears in current assessed amounts.
3. **HEALTH — 15 samples:** Occupational health samples 14 personal; 1 area. 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 7K employee hours and 13 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 0 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 — 14 since 2021:** Inspections 21 inspection events and 323 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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.14132 — Horns and backup alarms.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 56.12013 — 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 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 56.12016 — Work on electrically-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12016
- **30 CFR 56.12068 — Locking transformer enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12068
- **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:** 1 rows; 2026-04-14 through 2026-04-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-04-27 through 2020-04-27; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 1 rows; 2016-10-17 through 2016-10-17; source ID `msha-area-samples`
- **Assessed Violations:** 69 rows; 2014-08-27 through 2026-08-18; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2017-06-28 through 2017-06-28; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 3 rows; 2016-10-11 through 2016-10-11; source ID `msha-contested-violations`
- **Controller and Operator History:** 3 rows; 2013-09-05 through 2026-03-31; source ID `msha-controller-operator-history`
- **Inspections:** 21 rows; 2014-08-27 through 2026-09-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 96 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 21 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:** 14 rows; 2018-10-30 through 2026-08-19; source ID `msha-personal-health-samples`
- **Violations:** 69 rows; 2014-08-27 through 2026-08-18; 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/erda-4202613`
- JSON: `/api/v1/mines/erda-4202613`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4202613/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4202613/relationships`
- MCP resource: `mine://4202613/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`