# Relationship history for MSHA mine 4405355

Current hierarchy: **Compton Willie & Bobby Charles → B & W Coal Company → No 2**

- 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:** Future Energy Coal Corp → No 2; 1979-12-01 to 1980-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Turner Dennis M-Rual Fuller Et Al → No 2; 1979-12-01 to 1980-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Turner Dennis M-Rual Fuller Et Al → Future Energy Coal Corp; 1979-12-01 to 1980-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Compton Willie & Bobby Charles → No 2; 1980-08-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Future Energy Coal Corp → No 2; 1980-10-01 to 1981-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Fuller Rual → No 2; 1980-10-01 to 1981-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Fuller Rual → Future Energy Coal Corp; 1980-10-01 to 1981-06-30; source msha-controller-operator-history
- **operator_operates_mine:** B & W Coal Company → No 2; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compton Willie & Bobby Charles → B & W Coal Company; 1981-07-01 to current/open; source msha-controller-operator-history