# Calder

- **MSHA mine ID:** 5001639
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Ketchikan Gateway, AK
- **Operator:** Columbia River Carbonates
- **Controller:** Northwest Carbonates; Bleeck Management
- **Public source rows linked:** 196
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Northwest Carbonates; Bleeck Management (M07124) → Columbia River Carbonates (L09028) → Calder (5001639)**

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

## Controller and operator valid-time history

- **Sealaska Corp → Prince Of Wales Mining Llc:** 1997-06-01 through 1998-04-30; derived from co-tenure at mine 5001639; source `msha-controller-operator-history`.
- **Veco Inc → Eastwind-Div/Norcon Inc:** 1998-05-01 through 2000-05-31; derived from co-tenure at mine 5001639; source `msha-controller-operator-history`.
- **Sealaska Corp → Sea Cal Llc:** 2000-06-01 through 2012-01-24; derived from co-tenure at mine 5001639; source `msha-controller-operator-history`.
- **Northwest Carbonates  et al → Columbia River Carbonates:** 2012-01-25 through current/open; derived from co-tenure at mine 5001639; source `msha-controller-operator-history`.
- **Bleeck Management  et al → Columbia River Carbonates:** 2012-01-25 through current/open; derived from co-tenure at mine 5001639; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 — 7 since 2021:** Violations and penalties 30 violation rows across the full record; 4 carry an S&S flag and $3,990 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 2K employee hours and 5 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 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 — 8 since 2021:** Inspections 19 inspection events and 291 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 56.16001 — Stacking and storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16001
- **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 56.3130 — Wall, bank, and slope stability.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3130
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.4502 — Battery-charging stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4502
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12006
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2014-12-22 through 2014-12-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-11-01 through 2014-11-01; source ID `msha-addresses`
- **Assessed Violations:** 30 rows; 2012-07-26 through 2026-06-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2017-09-19 through 2017-09-19; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 3 rows; 2016-08-04 through 2016-08-04; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 1997-06-01 through 2012-01-25; source ID `msha-controller-operator-history`
- **Inspections:** 19 rows; 2012-07-26 through 2026-06-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 81 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 22 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 30 rows; 2012-07-26 through 2026-06-16; 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/calder-5001639`
- JSON: `/api/v1/mines/calder-5001639`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5001639/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5001639/relationships`
- MCP resource: `mine://5001639/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`