# Dippel Quarry

- **MSHA mine ID:** 4105167
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Coryell, TX
- **Operator:** Conners Construction Co., Inc.
- **Controller:** Jeff  Conners; Scott  Conners; Pam  Conners
- **Public source rows linked:** 206
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Jeff  Conners; Scott  Conners; Pam  Conners (0152841) → Conners Construction Co., Inc. (L13444) → Dippel Quarry (4105167)**

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

## Controller and operator valid-time history

- **Mary  Conners et al → CONNERS CONSTRUCTION, INC:** 2016-03-14 through 2016-08-31; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Jeff  Conners et al → CONNERS CONSTRUCTION, INC:** 2016-09-01 through 2018-03-28; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Pam  Conners et al → CONNERS CONSTRUCTION, INC:** 2016-09-01 through 2018-03-28; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Estate of Gary Conners et al → CONNERS CONSTRUCTION, INC:** 2016-09-01 through 2018-03-28; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Scott  Conners Et Al → CONNERS CONSTRUCTION, INC:** 2018-03-29 through current/open; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Jeff  Conners Et Al → CONNERS CONSTRUCTION, INC:** 2018-03-29 through current/open; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.
- **Pam  Conners Et Al → CONNERS CONSTRUCTION, INC:** 2018-03-29 through current/open; derived from co-tenure at mine 4105167; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 11
- 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 — 16 since 2021:** Violations and penalties 28 violation rows across the full record; 10 carry an S&S flag and $4,026 appears in current assessed amounts.
3. **HEALTH — 7 samples:** Occupational health samples 7 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 6 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 28 inspection events and 294 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 56.14112 — 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 56.9301 — Dump site restraints.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **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 56.4430 — Storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4430
- **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 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **30 CFR 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **30 CFR 56.20002 — Potable water.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20002
- **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 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 56.9300 — 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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001

## Source coverage

- **Addresses of Record:** 1 rows; 2018-01-17 through 2018-01-17; source ID `msha-addresses`
- **Assessed Violations:** 28 rows; 2017-02-02 through 2026-04-29; source ID `msha-assessed-violations`
- **Controller and Operator History:** 7 rows; 2016-03-14 through 2016-03-14; source ID `msha-controller-operator-history`
- **Inspections:** 28 rows; 2017-02-02 through 2026-04-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 84 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`
- **Metal and Nonmetal Personal Health Samples:** 7 rows; 2020-09-23 through 2025-02-25; source ID `msha-personal-health-samples`
- **Violations:** 28 rows; 2017-02-02 through 2026-04-29; 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/dippel-quarry-4105167`
- JSON: `/api/v1/mines/dippel-quarry-4105167`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4105167/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4105167/relationships`
- MCP resource: `mine://4105167/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`