# Plum Creek Pit

- **MSHA mine ID:** 0503753
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Douglas, CO
- **Operator:** Mobile Premix Sand & Gravel Company
- **Controller:** Redland Plc
- **Public source rows linked:** 6
- **Source coverage:** 3 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Redland Plc (M00190) → Mobile Premix Sand & Gravel Company (L10217) → Plum Creek Pit (0503753)**

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

## Controller and operator valid-time history

- **Scibelli Richard M → Rks Industries Inc:** 1981-12-01 through 1985-04-25; derived from co-tenure at mine 0503753; source `msha-controller-operator-history`.
- **M P M Inc → Mobile Premix Company:** 1985-04-26 through 1987-04-30; derived from co-tenure at mine 0503753; source `msha-controller-operator-history`.
- **Koppers Co Inc & Redland Plc → Mobile Premix Company:** 1987-05-01 through 1988-06-13; derived from co-tenure at mine 0503753; source `msha-controller-operator-history`.
- **Redland Plc → Mobile Premix Sand & Gravel Company:** 1988-06-14 through current/open; derived from co-tenure at mine 0503753; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 12
- 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 0 violation rows across the full record; 0 carry an S&S flag and $0 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
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 — 0 since 2021:** Inspections 0 inspection events and 0 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.

No retained recent violation standard resolved to the current Title 30 index.

## Source coverage

- **Addresses of Record:** 1 rows; 1994-08-24 through 1994-08-24; source ID `msha-addresses`
- **Controller and Operator History:** 4 rows; 1981-12-01 through 1988-06-14; source ID `msha-controller-operator-history`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`

## 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/plum-creek-pit-0503753`
- JSON: `/api/v1/mines/plum-creek-pit-0503753`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0503753/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0503753/relationships`
- MCP resource: `mine://0503753/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`