# Relationship history for MSHA mine 4405768

Current hierarchy: **Kern Ronnie & Garland Jr → K Coal Company → 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

- **operator_operates_mine:** Yale Limited Partnership → No 1; 1981-10-01 to 1982-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Yale Mining Corp & Robert Hollman Foundation → No 1; 1981-10-01 to 1982-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Yale Mining Corp & Robert Hollman Foundation → Yale Limited Partnership; 1981-10-01 to 1982-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Americoal Corp & Associates Of Va Ltd → No 1; 1982-09-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yale Mining Corp → No 1; 1982-09-15 to 1983-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Americoal Corp & Associates Of Va Ltd → Yale Mining Corp; 1982-09-15 to 1983-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Cattrell Darrell → No 1; 1982-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kern Ronnie & Garland Jr → No 1; 1982-12-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & C Coal Company Inc → No 1; 1983-03-29 to 1983-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Cattrell Darrell → D & C Coal Company Inc; 1983-03-29 to 1983-06-02; source msha-controller-operator-history
- **operator_operates_mine:** K Coal Company → No 1; 1983-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kern Ronnie & Garland Jr → K Coal Company; 1983-06-03 to current/open; source msha-controller-operator-history