# Relationship history for MSHA mine 4604583

Current hierarchy: **Mc Clung Harold C → Jenny Mining Company → Powellton #46**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** ITT Corporation → Powellton #46; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carbon Fuel Company → Powellton #46; 1975-06-01 to 1980-02-12; source msha-controller-operator-history
- **controller_controls_operator:** ITT Corporation → Carbon Fuel Company; 1975-06-01 to 1980-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Mc Clung Harold C → Powellton #46; 1979-11-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pilgrim Coal Company Inc → Powellton #46; 1980-02-13 to 1980-09-17; source msha-controller-operator-history
- **controller_controls_mine:** James  Taylor et al → Powellton #46; 1980-02-13 to 1980-09-17; source msha-controller-operator-history
- **controller_controls_operator:** James  Taylor et al → Pilgrim Coal Company Inc; 1980-02-13 to 1980-09-17; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Company Inc → Powellton #46; 1980-09-18 to 1982-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Mack  Lester → Powellton #46; 1980-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mack  Lester → C & R Coal Company Inc; 1980-09-18 to 1982-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Jenny Mining Company → Powellton #46; 1982-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clung Harold C → Jenny Mining Company; 1982-01-20 to current/open; source msha-controller-operator-history