# #162B Roadrunner

- **MSHA mine ID:** 2103880
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Carver, MN
- **Operator:** Wm. Mueller & Sons, Inc
- **Controller:** Timothy W Mueller; Mori D Willemsen; Brian  Droege
- **Public source rows linked:** 130
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Timothy W Mueller; Mori D Willemsen; Brian  Droege (0167021) → Wm. Mueller & Sons, Inc (L01471) → #162B Roadrunner (2103880)**

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

## Controller and operator valid-time history

- **Timothy  Mueller et al → Wm. Mueller & Sons, Inc:** 2016-03-10 through 2021-12-31; derived from co-tenure at mine 2103880; source `msha-controller-operator-history`.
- **Brad G Droege Et Al → Wm. Mueller & Sons, Inc:** 2016-03-10 through 2021-12-31; derived from co-tenure at mine 2103880; source `msha-controller-operator-history`.
- **Mori D Willemsen et al → Wm. Mueller & Sons, Inc:** 2022-01-01 through current/open; derived from co-tenure at mine 2103880; source `msha-controller-operator-history`.
- **Timothy W Mueller et al → Wm. Mueller & Sons, Inc:** 2022-01-01 through current/open; derived from co-tenure at mine 2103880; source `msha-controller-operator-history`.
- **Brian  Droege et al → Wm. Mueller & Sons, Inc:** 2022-01-01 through current/open; derived from co-tenure at mine 2103880; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 8
- 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 0 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 2 violation rows across the full record; 0 carry an S&S flag and $261 appears in current assessed amounts.
3. **HEALTH — 4 samples:** Occupational health samples 4 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 77 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 — 7 since 2021:** Inspections 12 inspection events and 61 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 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2024-06-26 through 2024-06-26; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2016-04-05 through 2016-04-05; source ID `msha-addresses`
- **Assessed Violations:** 2 rows; 2018-04-18 through 2023-10-18; source ID `msha-assessed-violations`
- **Controller and Operator History:** 5 rows; 2016-03-10 through 2016-03-10; source ID `msha-controller-operator-history`
- **Inspections:** 12 rows; 2016-08-02 through 2026-01-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 82 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 20 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:** 4 rows; 2016-11-08 through 2026-01-07; source ID `msha-personal-health-samples`
- **Violations:** 2 rows; 2018-04-18 through 2023-10-18; 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/162b-roadrunner-2103880`
- JSON: `/api/v1/mines/162b-roadrunner-2103880`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2103880/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2103880/relationships`
- MCP resource: `mine://2103880/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`