# Relationship history for MSHA mine 4404514

Current hierarchy: **Sonny J  Smith → Triple S Coal Company Inc → No8**

- 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:** Sonny J  Smith → No8; 1975-06-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yates Coal Company → No8; 1976-08-01 to 1977-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Yates → No8; 1976-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Yates → Yates Coal Company; 1976-08-01 to 1977-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Solid Mining Company → No8; 1977-06-13 to 1978-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Madeline R  Fletcher → No8; 1977-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Madeline R  Fletcher → Solid Mining Company; 1977-06-13 to 1978-01-08; source msha-controller-operator-history
- **operator_operates_mine:** Deca Mining Company Inc → No8; 1978-01-09 to 1983-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Stevenson David & Leon → No8; 1978-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stevenson David & Leon → Deca Mining Company Inc; 1978-01-09 to 1983-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Triple S Coal Company Inc → No8; 1983-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sonny J  Smith → Triple S Coal Company Inc; 1983-09-12 to current/open; source msha-controller-operator-history