# Relationship history for MSHA mine 4406065

Current hierarchy: **Deel Gearldine → Shell 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Ronald S  Ratliff → No 1; 1978-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bald Eagle Coal Company Inc → No 1; 1984-03-01 to 1984-09-09; source msha-controller-operator-history
- **controller_controls_mine:** Pruitt Danny E & Terry Hurley → No 1; 1984-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pruitt Danny E & Terry Hurley → Bald Eagle Coal Company Inc; 1984-03-01 to 1984-09-09; source msha-controller-operator-history
- **operator_operates_mine:** T & R Coal Company Inc → No 1; 1984-09-10 to 1985-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Ronald S  Ratliff → T & R Coal Company Inc; 1984-09-10 to 1985-04-22; source msha-controller-operator-history
- **operator_operates_mine:** Big Branch Coal Company Of Southwest Va Inc → No 1; 1985-04-23 to 1985-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Mayes Delmer H → No 1; 1985-04-23 to 1986-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Mayes Delmer H → Big Branch Coal Company Of Southwest Va Inc; 1985-04-23 to 1985-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Big Branch Coal Company Of Southwest Va Inc → No 1; 1985-10-02 to 1986-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Vandyke James O → No 1; 1985-10-02 to 1986-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Vandyke James O → Big Branch Coal Company Of Southwest Va Inc; 1985-10-02 to 1986-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Big Branch Coal Company Of Southwest Va Inc → No 1; 1986-02-10 to 1986-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Mayes Delmer H → Big Branch Coal Company Of Southwest Va Inc; 1986-02-10 to 1986-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Bird Dog Coal Company Inc → No 1; 1986-09-15 to 1987-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Lester Ronnie → No 1; 1986-09-15 to 1987-05-26; source msha-controller-operator-history
- **controller_controls_operator:** Lester Ronnie → Bird Dog Coal Company Inc; 1986-09-15 to 1987-05-26; source msha-controller-operator-history
- **operator_operates_mine:** Wet Coal Company Inc → No 1; 1987-05-27 to 1987-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Fuller Coy → No 1; 1987-05-27 to 1987-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Fuller Coy → Wet Coal Company Inc; 1987-05-27 to 1987-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Shell Coal Company → No 1; 1987-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deel Gearldine Et Al → No 1; 1987-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deel Gearldine Et Al → Shell Coal Company; 1987-10-20 to current/open; source msha-controller-operator-history