# Relationship history for MSHA mine 3000857

Current hierarchy: **CRH PLC → DOLOMITE GROUP → REDMAN PLANT**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Manitou Construction Company → REDMAN PLANT; 1950-01-01 to 2000-06-13; source msha-controller-operator-history
- **controller_controls_mine:** John M  Odenbach → REDMAN PLANT; 1950-01-01 to 2000-06-13; source msha-controller-operator-history
- **controller_controls_operator:** John M  Odenbach → Manitou Construction Company; 1950-01-01 to 2000-06-13; source msha-controller-operator-history
- **operator_operates_mine:** Manitou Construction Company → REDMAN PLANT; 2000-06-14 to 2002-09-08; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → REDMAN PLANT; 2000-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Manitou Construction Company; 2000-06-14 to 2002-09-08; source msha-controller-operator-history
- **operator_operates_mine:** DOLOMITE GROUP → REDMAN PLANT; 2002-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → DOLOMITE GROUP; 2002-09-09 to current/open; source msha-controller-operator-history