# Relationship history for MSHA mine 4605445

Current hierarchy: **Charles Robert B → Bern Fuel Inc → Banacek #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Massey Energy Company → Banacek #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Trace Fork Coal Company → Banacek #2; 1979-04-01 to 1985-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Trace Fork Coal Company; 1979-04-01 to 1985-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Digum Coal Company Inc → Banacek #2; 1985-09-09 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Hagerman Luther → Banacek #2; 1985-09-09 to 1986-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Hagerman Luther → Digum Coal Company Inc; 1985-09-09 to 1986-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Ted  Osborne  et al → Banacek #2; 1985-09-09 to 1990-01-30; source msha-controller-operator-history
- **operator_operates_mine:** Soho Coal Company Inc → Banacek #2; 1986-01-02 to 1987-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Ted  Osborne  et al → Soho Coal Company Inc; 1986-01-02 to 1987-09-24; source msha-controller-operator-history
- **operator_operates_mine:** Bern Fuel Inc → Banacek #2; 1987-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles Robert B → Banacek #2; 1987-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles Robert B → Bern Fuel Inc; 1987-09-25 to current/open; source msha-controller-operator-history