# Knox Expanded Reserves

- **MSHA mine ID:** 1202251
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Knox, IN
- **Operator:** Rogers Group Inc.
- **Controller:** Rogers Group Inc
- **Public source rows linked:** 491
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Rogers Group Inc (M00452) → Rogers Group Inc. (L06514) → Knox Expanded Reserves (1202251)**

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

## Controller and operator valid-time history

- **Darrell  Jones → Jones and Sons, Inc.:** 1999-04-01 through 2014-03-20; derived from co-tenure at mine 1202251; source `msha-controller-operator-history`.
- **Kurt A  Jones → Jones and Sons, Inc.:** 2014-03-21 through 2022-04-04; derived from co-tenure at mine 1202251; source `msha-controller-operator-history`.
- **Rogers Group Inc → Rogers Group Inc.:** 2022-04-05 through current/open; derived from co-tenure at mine 1202251; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 1 lost days across the published record.
2. **COMPLIANCE — 8 since 2021:** Violations and penalties 84 violation rows across the full record; 25 carry an S&S flag and $10,687 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 9 personal; 2 area. 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 1K employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 29 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 17 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 — 5 since 2021:** Inspections 53 inspection events and 537 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 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.12030 — 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 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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 56.14132 — 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 56.11001 — 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

- **Accident, Injuries, and Illnesses:** 1 rows; 2008-05-02 through 2008-05-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-04-15 through 2022-04-15; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 2 rows; 2022-03-16 through 2022-03-16; source ID `msha-area-samples`
- **Assessed Violations:** 84 rows; 2000-05-12 through 2021-10-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2013-01-15 through 2014-02-25; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2000-05-30 through 2012-07-02; source ID `msha-conferences`
- **Contested Violations:** 6 rows; 2012-05-07 through 2013-08-05; source ID `msha-contested-violations`
- **Controller and Operator History:** 3 rows; 1999-04-01 through 2022-04-05; source ID `msha-controller-operator-history`
- **Inspections:** 53 rows; 2000-05-12 through 2022-03-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 178 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 46 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:** 9 rows; 2003-07-30 through 2022-03-16; source ID `msha-personal-health-samples`
- **Violations:** 84 rows; 2000-05-12 through 2021-10-06; 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/knox-expanded-reserves-1202251`
- JSON: `/api/v1/mines/knox-expanded-reserves-1202251`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1202251/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1202251/relationships`
- MCP resource: `mine://1202251/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`