# Relationship history for MSHA mine 4404133

Current hierarchy: **Hall Luther R & James C Rife → R & H Coal Company → No 2 Mine**

- 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:** Bearwallow Coal Company → No 2 Mine; 1975-07-29 to 1975-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Colley Kenneth → No 2 Mine; 1975-07-29 to 1975-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Colley Kenneth → Bearwallow Coal Company; 1975-07-29 to 1975-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Dotson Bobby & James Little → No 2 Mine; 1975-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bearwallow Coal Company → No 2 Mine; 1975-11-21 to 1976-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Swiney Melvin & Gerald Clouse → No 2 Mine; 1975-11-21 to 1976-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Swiney Melvin & Gerald Clouse → Bearwallow Coal Company; 1975-11-21 to 1976-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Bearwallow Coal Company → No 2 Mine; 1976-05-19 to 1976-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Davis Donald Ray → No 2 Mine; 1976-05-19 to 1976-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Davis Donald Ray → Bearwallow Coal Company; 1976-05-19 to 1976-12-14; source msha-controller-operator-history
- **operator_operates_mine:** Bearwallow Mining Company Inc → No 2 Mine; 1976-12-15 to 1977-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Billy Ray  Dotson → No 2 Mine; 1976-12-15 to 1977-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Billy Ray  Dotson → Bearwallow Mining Company Inc; 1976-12-15 to 1977-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Cisco Thomas Jr → No 2 Mine; 1977-03-26 to 1978-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Hall Luther R & James C Rife → No 2 Mine; 1977-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cisco Coal Company → No 2 Mine; 1977-07-27 to 1978-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Cisco Thomas Jr → Cisco Coal Company; 1977-07-27 to 1978-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Triangle Coal Company → No 2 Mine; 1978-03-27 to 1978-09-19; source msha-controller-operator-history
- **controller_controls_operator:** Dotson Bobby & James Little → Triangle Coal Company; 1978-03-27 to 1978-09-19; source msha-controller-operator-history
- **operator_operates_mine:** R & H Coal Company → No 2 Mine; 1978-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hall Luther R & James C Rife → R & H Coal Company; 1978-09-20 to current/open; source msha-controller-operator-history