# Relationship history for MSHA mine 4608308

Current hierarchy: **B Douglas  Divita → Divita Coal Company Inc → Donager No 1 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

- **controller_controls_mine:** Owens George → Donager No 1 Mine; 1987-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** B Douglas  Divita → Donager No 1 Mine; 1991-01-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gold River Mining Company Inc → Donager No 1 Mine; 1993-06-01 to 1994-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Owens George → Gold River Mining Company Inc; 1993-06-01 to 1994-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Divita Coal Company Inc → Donager No 1 Mine; 1994-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** B Douglas  Divita → Divita Coal Company Inc; 1994-04-07 to current/open; source msha-controller-operator-history