# Tolson Pit

- **MSHA mine ID:** 1800667
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Anne Arundel, MD
- **Operator:** Resource Conservation Group
- **Controller:** Chaney Enterprises LP; Reliable Contracting Co Inc
- **Public source rows linked:** 612
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Chaney Enterprises LP; Reliable Contracting Co Inc (0117001) → Resource Conservation Group (0137533) → Tolson Pit (1800667)**

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

## Controller and operator valid-time history

- **James  Cunningham → Cunningham Sand & Gravel:** 1979-01-01 through 2015-01-13; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.
- **Chaney Enterprises LP et al → Resource Conservation Group:** 2015-01-14 through 2015-03-24; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.
- **Reliable Contracting Co Inc et al → Resource Conservation Group:** 2015-01-14 through 2015-03-24; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.
- **Tolson and Associates LLC → Resource Conservation Group:** 2015-03-25 through 2015-03-25; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.
- **Reliable Contracting Co Inc et al → Resource Conservation Group:** 2015-03-26 through current/open; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.
- **Chaney Enterprises LP et al → Resource Conservation Group:** 2015-03-26 through current/open; derived from co-tenure at mine 1800667; source `msha-controller-operator-history`.

- History rows: 6
- 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 6 historical accident/injury rows; 0 coded fatalities and 242 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 92 violation rows across the full record; 31 carry an S&S flag and $19,987 appears in current assessed amounts.
3. **HEALTH — 20 samples:** Occupational health samples 20 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 783 employee hours and 15 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 9 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 46 inspection events and 817 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 56.9300 — Berms or guardrails.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.12017 — Work on power circuits.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12017
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.11001 — 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:** 6 rows; 2000-05-05 through 2013-03-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-11-06 through 2019-11-06; source ID `msha-addresses`
- **Assessed Violations:** 92 rows; 2000-03-14 through 2019-07-30; source ID `msha-assessed-violations`
- **Conferences:** 9 rows; 2000-08-09 through 2016-07-18; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 112 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 27 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1979-01-01 through 2015-03-26; source ID `msha-controller-operator-history`
- **Inspections:** 46 rows; 2000-03-14 through 2019-07-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 160 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 40 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:** 20 rows; 2002-08-07 through 2019-01-09; source ID `msha-personal-health-samples`
- **Violations:** 92 rows; 2000-03-14 through 2019-07-30; 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/tolson-pit-1800667`
- JSON: `/api/v1/mines/tolson-pit-1800667`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1800667/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1800667/relationships`
- MCP resource: `mine://1800667/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`