# Holt Construction & Rock LP - **MSHA mine ID:** 2302242 - **Status:** Abandoned - **Type / commodity:** Surface / Construction Sand and Gravel - **Location:** Polk, MO - **Operator:** Holt Construction & Rock LP - **Controller:** Pamela S Holt; Chris Holt - **Public source rows linked:** 190 - **Source coverage:** 11 / 20 - **Generated:** 2026-10-13T11:26:59.401Z ## Current entity hierarchy **Pamela S Holt; Chris Holt (0091495) → Holt Construction & Rock LP (0108106) → Holt Construction & Rock LP (2302242)** Current identity source: `msha-mines`. This is a current snapshot, not a historical claim. ## Controller and operator valid-time history - **Chris Holt → Holt Construction & Rock:** 2001-07-01 through 2010-03-02; derived from co-tenure at mine 2302242; source `msha-controller-operator-history`. - **Chris Holt et al → Holt Construction & Rock LP:** 2010-03-03 through current/open; derived from co-tenure at mine 2302242; source `msha-controller-operator-history`. - **Pamela S Holt et al → Holt Construction & Rock LP:** 2010-03-03 through current/open; derived from co-tenure at mine 2302242; source `msha-controller-operator-history`. - History rows: 3 - Typed edges: 7 - 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 — 0 since 2021:** Violations and penalties 19 violation rows across the full record; 4 carry an S&S flag and $2,484 appears in current assessed amounts. 3. **HEALTH — 5 samples:** Occupational health samples 5 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 267 employee hours and 3 summed average employees across reported subunits in the latest published quarter. 5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 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 18 inspection events and 140 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 56.4130 — Electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4130 - **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 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028 - **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8 - **30 CFR 56.18010 — First aid.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010 - **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008 - **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 56.14108 — 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 - **Addresses of Record:** 1 rows; 2018-08-27 through 2018-08-27; source ID `msha-addresses` - **Assessed Violations:** 19 rows; 2001-07-02 through 2016-12-21; source ID `msha-assessed-violations` - **Civil Penalty Dockets and Decisions:** 1 rows; 2011-08-17 through 2011-08-17; source ID `msha-civil-penalty-dockets-decisions` - **Contested Violations:** 1 rows; 2010-07-08 through 2010-07-08; source ID `msha-contested-violations` - **Controller and Operator History:** 3 rows; 2001-07-01 through 2010-03-03; source ID `msha-controller-operator-history` - **Inspections:** 18 rows; 2001-07-02 through 2016-12-21; source ID `msha-inspections` - **Mine Employment and Production — Quarterly:** 96 rows; unknown through unknown; source ID `msha-mine-production-quarterly` - **Mine Employment and Production — Yearly:** 26 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:** 5 rows; 2013-09-18 through 2016-09-27; source ID `msha-personal-health-samples` - **Violations:** 19 rows; 2001-07-02 through 2016-12-21; 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/holt-construction-rock-lp-2302242` - JSON: `/api/v1/mines/holt-construction-rock-lp-2302242` - Silica records, units, sample status and quarterly means: `/api/v1/mines/2302242/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows) - Relationship JSON: `/api/v1/mines/2302242/relationships` - MCP resource: `mine://2302242/assessment` - Complete Title 30 corpus: `/data/title30-sections.json`