# Relationship history for MSHA mine 4604195

Current hierarchy: **Basham Calvin R → Dino Contractors Inc → #1 Surface 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:** American Electric Power Company Inc → #1 Surface Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lovett Dean E → #1 Surface Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan W  Tucker → #1 Surface Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central Appalachian Coal Company → #1 Surface Mine; 1974-11-07 to 1979-06-28; source msha-controller-operator-history
- **controller_controls_operator:** American Electric Power Company Inc → Central Appalachian Coal Company; 1974-11-07 to 1979-06-28; source msha-controller-operator-history
- **operator_operates_mine:** T & S Coal Company Inc → #1 Surface Mine; 1979-06-29 to 1979-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Dan W  Tucker → T & S Coal Company Inc; 1979-06-29 to 1979-12-11; source msha-controller-operator-history
- **operator_operates_mine:** Dino Contractors Inc → #1 Surface Mine; 1979-12-12 to 1981-09-02; source msha-controller-operator-history
- **controller_controls_operator:** Lovett Dean E → Dino Contractors Inc; 1979-12-12 to 1981-09-02; source msha-controller-operator-history
- **operator_operates_mine:** Dino Contractors Inc → #1 Surface Mine; 1981-09-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Basham Calvin R Et Al → #1 Surface Mine; 1981-09-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Basham Calvin R Et Al → Dino Contractors Inc; 1981-09-03 to current/open; source msha-controller-operator-history