# Relationship history for MSHA mine 4405022

Current hierarchy: **Kern Ronnie & Garland Jr → K Coal Company → No 1 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:** De Voe Robert F Et Al → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunshine Collieries Inc → No 1 Mine; 1978-04-01 to 1981-01-22; source msha-controller-operator-history
- **controller_controls_operator:** De Voe Robert F Et Al → Sunshine Collieries Inc; 1978-04-01 to 1981-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → No 1 Mine; 1979-01-16 to 1982-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Yale Mining Corp → No 1 Mine; 1981-01-23 to 1982-09-13; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Yale Mining Corp; 1981-01-23 to 1982-09-13; source msha-controller-operator-history
- **operator_operates_mine:** Yale Mining Corp → No 1 Mine; 1982-09-14 to 1982-12-13; source msha-controller-operator-history
- **controller_controls_mine:** Americoal Corp & Associates Of Va Ltd → No 1 Mine; 1982-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Americoal Corp & Associates Of Va Ltd → Yale Mining Corp; 1982-09-14 to 1982-12-13; source msha-controller-operator-history
- **operator_operates_mine:** K Coal Company → No 1 Mine; 1982-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kern Ronnie & Garland Jr → No 1 Mine; 1982-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kern Ronnie & Garland Jr → K Coal Company; 1982-12-14 to current/open; source msha-controller-operator-history