# Relationship history for MSHA mine 4402238

Current hierarchy: **Ray Jacky → Shannon Coal Company Inc → No 1**

- 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:** B Ray  Thompson → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Three Forks Coal Company → No 1; 1950-01-01 to 1971-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Cook William C → No 1; 1950-01-01 to 1971-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Cook William C → Three Forks Coal Company; 1950-01-01 to 1971-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Clay Mining Co → No 1; 1971-08-01 to 1974-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Clay Mining Co → No 1; 1971-08-01 to 1974-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Clay Mining Co → Clay Mining Co; 1971-08-01 to 1974-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Winston Mining Company → No 1; 1974-03-01 to 1976-01-02; source msha-controller-operator-history
- **controller_controls_operator:** B Ray  Thompson → Winston Mining Company; 1974-03-01 to 1976-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Burnt Chestnut Coal Co → No 1; 1976-01-03 to 1979-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Ray Garnett → No 1; 1976-01-03 to 1979-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Ray Garnett → Burnt Chestnut Coal Co; 1976-01-03 to 1979-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Shannon Coal Company Inc → No 1; 1979-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ray Jacky → No 1; 1979-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray Jacky → Shannon Coal Company Inc; 1979-05-04 to current/open; source msha-controller-operator-history