# Rocky Mountain Quartzite Quarry

- **MSHA mine ID:** 1000648
- **Status:** Intermittent
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** Cassia, ID
- **Operator:** Northern Stone Supply Inc
- **Controller:** Gregory L Osterhout
- **Public source rows linked:** 473
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Gregory L Osterhout (0166123) → Northern Stone Supply Inc (L36785) → Rocky Mountain Quartzite Quarry (1000648)**

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

## Controller and operator valid-time history

- **Gary N  Mullard et al → Northern Stone Supply Inc:** 1950-01-01 through 2022-01-09; derived from co-tenure at mine 1000648; source `msha-controller-operator-history`.
- **Gregory L Osterhout → Northern Stone Supply Inc:** 2022-01-10 through current/open; derived from co-tenure at mine 1000648; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 5 historical accident/injury rows; 1 coded fatalities and 180 lost days across the published record.
2. **COMPLIANCE — 12 since 2021:** Violations and penalties 72 violation rows across the full record; 17 carry an S&S flag and $15,188 appears in current assessed amounts.
3. **HEALTH — 17 samples:** Occupational health samples 17 personal. 4 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 — 22 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 9 civil-penalty docket/decision rows, and 12 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 5 since 2021:** Inspections 45 inspection events and 970 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 56.4201 — 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 56.14100 — Safety defects; examination, correction and records.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.9300 — Berms or guardrails.** (1 retained recent row) — 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 46.9 — Records of training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2000-08-09 through 2008-07-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1984-11-15 through 1984-11-15; source ID `msha-addresses`
- **Assessed Violations:** 69 rows; 2000-08-23 through 2026-06-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 9 rows; 2000-11-24 through 2011-05-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 12 rows; 2000-10-10 through 2003-07-08; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2008-10-01 through 2008-10-01; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 166 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 33 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 45 rows; 2000-08-10 through 2026-06-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 13 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 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:** 17 rows; 2002-05-14 through 2020-06-23; source ID `msha-personal-health-samples`
- **Violations:** 72 rows; 2000-08-10 through 2026-06-17; 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/rocky-mountain-quartzite-quarry-1000648`
- JSON: `/api/v1/mines/rocky-mountain-quartzite-quarry-1000648`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1000648/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1000648/relationships`
- MCP resource: `mine://1000648/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`