# Relationship history for MSHA mine 4405026

Current hierarchy: **Compton Willie & Bobby Charles → B & W 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Jennings Bill → No 1; 1976-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & S Coal Company Inc → No 1; 1978-05-01 to 1980-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Jennings Bill → J & S Coal Company Inc; 1978-05-01 to 1980-07-15; source msha-controller-operator-history
- **operator_operates_mine:** T & P Coal Company → No 1; 1980-07-16 to 1980-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Tiller Robert & Larry Et Al → No 1; 1980-07-16 to 1980-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Tiller Robert & Larry Et Al → T & P Coal Company; 1980-07-16 to 1980-08-25; source msha-controller-operator-history
- **operator_operates_mine:** B & W Coal Company → No 1; 1980-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Compton Willie & Bobby Charles → No 1; 1980-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compton Willie & Bobby Charles → B & W Coal Company; 1980-08-26 to current/open; source msha-controller-operator-history