# Relationship history for MSHA mine 4605500

Current hierarchy: **Chafin John C Sr → Chafin Coal Company Inc → No 4**

- 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:** Chafin John C Sr → No 4; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chafin Coal Company Inc → No 4; 1977-04-01 to 1980-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Chafin John C Sr → Chafin Coal Company Inc; 1977-04-01 to 1980-11-16; source msha-controller-operator-history
- **operator_operates_mine:** Caryco Mining Ltd → No 4; 1980-11-17 to 1986-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Chafin John C Jr & Arthur B Chafin → No 4; 1980-11-17 to 1986-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Chafin John C Jr & Arthur B Chafin → Caryco Mining Ltd; 1980-11-17 to 1986-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Hunt Coal Inc → No 4; 1986-02-03 to 1986-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Rodney → No 4; 1986-02-03 to 1986-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Rodney → Hunt Coal Inc; 1986-02-03 to 1986-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Gary K → No 4; 1986-02-24 to 1987-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Prince Trucking Company → No 4; 1986-04-11 to 1986-11-20; source msha-controller-operator-history
- **controller_controls_mine:** Prince Ersel → No 4; 1986-04-11 to 1986-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Prince Ersel → Prince Trucking Company; 1986-04-11 to 1986-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Delta Mining Corp → No 4; 1986-11-21 to 1987-11-19; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Gary K → Delta Mining Corp; 1986-11-21 to 1987-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Telstar Coal Inc → No 4; 1987-11-20 to 1988-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Clark Richard D → No 4; 1987-11-20 to 1988-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Clark Richard D → Telstar Coal Inc; 1987-11-20 to 1988-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Chafin Coal Company Inc → No 4; 1988-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chafin John C Sr → Chafin Coal Company Inc; 1988-09-26 to current/open; source msha-controller-operator-history