# Relationship history for MSHA mine 5001281

Current hierarchy: **Colas S A → Glacier Construction Inc. dba Southeast Road Buil → CEC Washplant Lower Steelhead POW**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Phil  Godfrey → CEC Washplant Lower Steelhead POW; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Madsen Construction Inc → CEC Washplant Lower Steelhead POW; 1979-01-01 to 1979-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Madsen Donald C → CEC Washplant Lower Steelhead POW; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Madsen Donald C → Madsen Construction Inc; 1979-01-01 to 1979-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Red Samm Construction Inc → CEC Washplant Lower Steelhead POW; 1979-11-01 to 2024-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Phil  Godfrey → Red Samm Construction Inc; 1979-11-01 to 2024-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → CEC Washplant Lower Steelhead POW; 2018-03-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Glacier Construction Inc. dba Southeast Road Buil → CEC Washplant Lower Steelhead POW; 2024-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Glacier Construction Inc. dba Southeast Road Buil; 2024-12-09 to current/open; source msha-controller-operator-history