# DALRYMPLE PIT

- **MSHA mine ID:** 1000763
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Ada, ID
- **Operator:** Boise Valley Gravel Co
- **Controller:** (Paul) Mike  Mulchay
- **Public source rows linked:** 81
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**(Paul) Mike  Mulchay (M02332) → Boise Valley Gravel Co (L00190) → DALRYMPLE PIT (1000763)**

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

## Controller and operator valid-time history

- **(Paul) Mike  Mulchay → Boise Valley Gravel Company:** 1950-01-01 through 1979-04-17; derived from co-tenure at mine 1000763; source `msha-controller-operator-history`.
- **Gillette Gary L → Boise Paving & Asphalt Company:** 1979-04-18 through 1979-06-15; derived from co-tenure at mine 1000763; source `msha-controller-operator-history`.
- **(Paul) Mike  Mulchay → Boise Valley Gravel Company:** 1979-06-16 through 1980-02-15; derived from co-tenure at mine 1000763; source `msha-controller-operator-history`.
- **Gillette Gary L → Boise Paving & Asphalt Company:** 1980-02-16 through 1980-04-14; derived from co-tenure at mine 1000763; source `msha-controller-operator-history`.
- **(Paul) Mike  Mulchay → Boise Valley Gravel Company:** 1980-04-15 through current/open; derived from co-tenure at mine 1000763; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 12
- 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 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 18 violation rows across the full record; 1 carry an S&S flag and $1,049 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 0 employee hours and 0 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 10 inspection events and 151 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 56.4104 — Combustible waste.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **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 56.9300 — 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 50.10 — Immediate notification.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.10
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **30 CFR 56.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115
- **30 CFR 56.14108 — Overhead drive belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14108

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2002-06-07 through 2002-06-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2003-09-15 through 2003-09-15; source ID `msha-addresses`
- **Assessed Violations:** 18 rows; 2000-08-09 through 2003-06-23; source ID `msha-assessed-violations`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 1980-04-15; source ID `msha-controller-operator-history`
- **Inspections:** 10 rows; 2000-08-09 through 2003-06-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 18 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 5 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; 2003-06-24 through 2003-06-24; source ID `msha-personal-health-samples`
- **Violations:** 18 rows; 2000-08-09 through 2003-06-23; 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/dalrymple-pit-1000763`
- JSON: `/api/v1/mines/dalrymple-pit-1000763`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1000763/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1000763/relationships`
- MCP resource: `mine://1000763/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`