# Relationship history for MSHA mine 4607821

Current hierarchy: **Compton Kennie D → Lockridge Development Inc → Mine No 5**

- 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:** Golden Chance Coals Inc → Mine No 5; 1989-12-01 to 1993-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Anthony P  Cline → Mine No 5; 1989-12-01 to 1993-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Anthony P  Cline → Golden Chance Coals Inc; 1989-12-01 to 1993-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Lockridge Development Inc → Mine No 5; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Compton Kennie D → Mine No 5; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compton Kennie D → Lockridge Development Inc; 1993-04-01 to current/open; source msha-controller-operator-history