# Brockman Sand

- **MSHA mine ID:** 1300632
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Lee, IA
- **Operator:** Ideal Ready Mix Company Inc
- **Controller:** Rasmussen Group Inc
- **Public source rows linked:** 185
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Rasmussen Group Inc (M12677) → Ideal Ready Mix Company Inc (L07305) → Brockman Sand (1300632)**

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

## Controller and operator valid-time history

- **Michael A  Brockman → Brockman Sand Company:** 1950-01-01 through 2000-08-31; derived from co-tenure at mine 1300632; source `msha-controller-operator-history`.
- **Johnson Holding Company → Brockman Sand:** 2000-09-01 through 2013-05-28; derived from co-tenure at mine 1300632; source `msha-controller-operator-history`.
- **Johnson Holding Company → Ideal Ready Mix Company Inc:** 2013-05-29 through 2024-04-18; derived from co-tenure at mine 1300632; source `msha-controller-operator-history`.
- **Rasmussen Group Inc → Ideal Ready Mix Company Inc:** 2024-04-19 through current/open; derived from co-tenure at mine 1300632; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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: 2026-10-17T05:35:58.500035+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 — 0 since 2021:** Violations and penalties 43 violation rows across the full record; 5 carry an S&S flag and $3,592 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 1K employee hours and 3 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 — 0 since 2021:** Inspections 32 inspection events and 305 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 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 56.14112 — Construction and maintenance of guards.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.12032 — 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 56.4101 — 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 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44

## Source coverage

- **Addresses of Record:** 1 rows; 2018-05-24 through 2018-05-24; source ID `msha-addresses`
- **Assessed Violations:** 43 rows; 2000-07-20 through 2015-12-02; source ID `msha-assessed-violations`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2013-05-29; source ID `msha-controller-operator-history`
- **Inspections:** 32 rows; 2000-07-20 through 2017-02-22; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 35 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:** 2 rows; 2011-07-26 through 2011-07-26; source ID `msha-personal-health-samples`
- **Violations:** 43 rows; 2000-07-20 through 2015-12-02; 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/brockman-sand-1300632`
- JSON: `/api/v1/mines/brockman-sand-1300632`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1300632/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1300632/relationships`
- MCP resource: `mine://1300632/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`