# Relationship history for MSHA mine 1512375

Current hierarchy: **Green David F → Tdc Inc → Yellow Creek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Anne  Hoke et al → Yellow Creek Mine; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Green David F → Yellow Creek Mine; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Smith Jim R → Yellow Creek Mine; 1978-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jiward Coal Company Inc → Yellow Creek Mine; 1980-06-01 to 1985-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Smith Jim R → Jiward Coal Company Inc; 1980-06-01 to 1985-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Hoke Company Inc → Yellow Creek Mine; 1985-05-01 to 1991-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Anne  Hoke et al → Hoke Company Inc; 1985-05-01 to 1991-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Hoke et al → Hoke Company Inc; 1985-05-01 to 1991-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Tdc Inc → Yellow Creek Mine; 1991-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Green David F → Tdc Inc; 1991-08-01 to current/open; source msha-controller-operator-history