# Dicaperl Minerals LLC

- **MSHA mine ID:** 2901433
- **Status:** Active
- **Type / commodity:** Surface / Perlite
- **Location:** Socorro, NM
- **Operator:** Dicaperl Minerals LLC
- **Controller:** Dicalite Management Holdings, LLC
- **Public source rows linked:** 1,287
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Dicalite Management Holdings, LLC (0147581) → Dicaperl Minerals LLC (L12754) → Dicaperl Minerals LLC (2901433)**

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

## Controller and operator valid-time history

- **Dicalite Management Group LLC → Dicaperl Minerals LLC:** 1950-01-01 through 2019-02-20; derived from co-tenure at mine 2901433; source `msha-controller-operator-history`.
- **Dicalite Management Holdings, LLC → Dicaperl Minerals LLC:** 2019-02-21 through current/open; derived from co-tenure at mine 2901433; 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 — 20 since 2021:** Accidents and injuries 63 historical accident/injury rows; 0 coded fatalities and 2,491 lost days across the published record.
2. **COMPLIANCE — 64 since 2021:** Violations and penalties 358 violation rows across the full record; 105 carry an S&S flag and $107,947 appears in current assessed amounts.
3. **HEALTH — 163 samples:** Occupational health samples 163 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 16K employee hours and 36 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 129 linked rows:** Contests, conferences and decisions 42 contested-violation rows, 65 civil-penalty docket/decision rows, and 22 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 17 since 2021:** Inspections 90 inspection events and 2K 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 56.14107 — 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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **30 CFR 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **30 CFR 56.14205 — Machinery, equipment, and tools.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **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 56.4603 — Closure of valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4603
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018

## Source coverage

- **Accident, Injuries, and Illnesses:** 63 rows; 2001-03-28 through 2025-09-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2018-12-11 through 2018-12-11; source ID `msha-addresses`
- **Assessed Violations:** 355 rows; 2000-05-16 through 2026-08-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 65 rows; 2001-12-13 through 2023-07-07; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 22 rows; 2002-04-29 through 2007-07-18; source ID `msha-conferences`
- **Contested Violations:** 42 rows; 2006-06-29 through 2022-08-11; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 7 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1 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:** 90 rows; 2000-01-06 through 2026-08-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 163 rows; 2000-02-13 through 2024-01-23; source ID `msha-personal-health-samples`
- **Violations:** 358 rows; 2000-05-16 through 2026-08-16; 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/dicaperl-minerals-llc-2901433`
- JSON: `/api/v1/mines/dicaperl-minerals-llc-2901433`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2901433/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2901433/relationships`
- MCP resource: `mine://2901433/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`