# Relationship history for MSHA mine 4604201

Current hierarchy: **Mountaineer Energy Company Inc → Mountaineer Energy Co Inc → No 3 Mine**

- 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

- **controller_controls_mine:** Gregoire Harold C → No 3 Mine; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H C Gregoire Inc → No 3 Mine; 1974-08-12 to 1976-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Gregoire Harold C → H C Gregoire Inc; 1974-08-12 to 1976-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Mountaineer Energy Company Inc → No 3 Mine; 1975-12-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountaineer Energy Co Inc → No 3 Mine; 1976-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mountaineer Energy Company Inc → Mountaineer Energy Co Inc; 1976-01-08 to current/open; source msha-controller-operator-history