# Portable 1

- **MSHA mine ID:** 3503870
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Klamath, OR
- **Operator:** Beaver Pumice LLC
- **Controller:** Michael P  Fairfield; Lucas  Fairfield
- **Public source rows linked:** 225
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Michael P  Fairfield; Lucas  Fairfield (0144483) → Beaver Pumice LLC (0160273) → Portable 1 (3503870)**

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

## Controller and operator valid-time history

- **Michael P  Fairfield et al → Beaver Pumice LLC:** 2018-09-17 through current/open; derived from co-tenure at mine 3503870; source `msha-controller-operator-history`.
- **Lucas  Fairfield et al → Beaver Pumice LLC:** 2018-09-17 through current/open; derived from co-tenure at mine 3503870; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 44 since 2021:** Violations and penalties 51 violation rows across the full record; 12 carry an S&S flag and $28,710 appears in current assessed amounts.
3. **HEALTH — 3 samples:** Occupational health samples 3 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 3K employee hours and 5 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 18 linked rows:** Contests, conferences and decisions 9 contested-violation rows, 9 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 — 18 since 2021:** Inspections 24 inspection events and 353 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.9315 — Dust control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9315
- **30 CFR 56.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23002
- **30 CFR 56.14131 — Seat belts for haulage trucks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14131
- **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
- **30 CFR 48.27 — Training of miners assigned to a task in which they have had no previous experience; minimum courses of instruction.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.27
- **30 CFR 56.9301 — Dump site restraints.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **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 56.14200 — Warnings prior to starting or moving equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14200

## Source coverage

- **Addresses of Record:** 1 rows; 2021-09-21 through 2021-09-21; source ID `msha-addresses`
- **Assessed Violations:** 51 rows; 2019-08-28 through 2026-07-30; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 9 rows; 2025-08-29 through 2025-11-17; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 9 rows; 2025-02-18 through 2025-06-03; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 2018-09-17 through 2018-09-17; source ID `msha-controller-operator-history`
- **Inspections:** 24 rows; 2019-08-28 through 2026-07-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 58 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 16 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:** 3 rows; 2019-10-30 through 2023-10-24; source ID `msha-personal-health-samples`
- **Violations:** 51 rows; 2019-08-28 through 2026-07-30; 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/portable-1-3503870`
- JSON: `/api/v1/mines/portable-1-3503870`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3503870/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3503870/relationships`
- MCP resource: `mine://3503870/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`