# Relationship history for MSHA mine 4002504

Current hierarchy: **Trivett Henry & Garieth → Fenco Mining Company Inc → #3 Surface**

- 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:** Fenco Mining Company Inc → #3 Surface; 1979-03-01 to 1979-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Wilson Russell → #3 Surface; 1979-03-01 to 1979-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Wilson Russell → Fenco Mining Company Inc; 1979-03-01 to 1979-11-27; source msha-controller-operator-history
- **operator_operates_mine:** Fenco Mining Company Inc → #3 Surface; 1979-11-28 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Roger L → #3 Surface; 1979-11-28 to 1983-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Roger L → Fenco Mining Company Inc; 1979-11-28 to 1983-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Fenco Mining Company Inc → #3 Surface; 1983-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Trivett Henry & Garieth → #3 Surface; 1983-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Trivett Henry & Garieth → Fenco Mining Company Inc; 1983-07-26 to current/open; source msha-controller-operator-history