# Relationship history for MSHA mine 4607999

Current hierarchy: **Edward A  Asbury → Bay Star Coal Company Inc → Jacobs Fork Load-Out**

- 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:** Edward A  Asbury → Jacobs Fork Load-Out; 1988-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bay Star Coal Company Inc → Jacobs Fork Load-Out; 1991-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward A  Asbury → Bay Star Coal Company Inc; 1991-02-01 to current/open; source msha-controller-operator-history