# Relationship history for MSHA mine 4605266

Current hierarchy: **Dan W  Tucker → T & S Coal Company Inc → T & S Surface Mine #47**

- 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:** Dan W  Tucker → T & S Surface Mine #47; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** De Bord Perry B → T & S Surface Mine #47; 1974-07-16 to 1981-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Helencat Inc → T & S Surface Mine #47; 1976-07-21 to 1979-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Ray G E → T & S Surface Mine #47; 1976-07-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray G E → Helencat Inc; 1976-07-21 to 1979-05-21; source msha-controller-operator-history
- **operator_operates_mine:** L S Coleman Company → T & S Surface Mine #47; 1979-05-22 to 1981-02-11; source msha-controller-operator-history
- **controller_controls_operator:** De Bord Perry B → L S Coleman Company; 1979-05-22 to 1981-02-11; source msha-controller-operator-history
- **operator_operates_mine:** L S Coleman Company → T & S Surface Mine #47; 1981-02-12 to 1984-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Eicher Delmar C → T & S Surface Mine #47; 1981-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eicher Delmar C → L S Coleman Company; 1981-02-12 to 1984-07-31; source msha-controller-operator-history
- **operator_operates_mine:** T & S Coal Company Inc → T & S Surface Mine #47; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan W  Tucker → T & S Coal Company Inc; 1984-08-01 to current/open; source msha-controller-operator-history