# Relationship history for MSHA mine 4404275

Current hierarchy: **Ray Ronnie S & Ralph W → Ray Coal Company → No 4**

- 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:** Wm R Coal Company → No 4; 1976-02-17 to 1978-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Elkins Charles C & Wm R--Roger Sutherland Et Al → No 4; 1976-02-17 to 1978-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Elkins Charles C & Wm R--Roger Sutherland Et Al → Wm R Coal Company; 1976-02-17 to 1978-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Ray Ronnie S & Ralph W → No 4; 1977-03-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ray Coal Company → No 4; 1978-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray Ronnie S & Ralph W → Ray Coal Company; 1978-08-29 to current/open; source msha-controller-operator-history