# Relationship history for MSHA mine 4609118

Current hierarchy: **Jeffery S  Sisler → Ali Co → Booths Creek 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:** Jeffery S  Sisler → Booths Creek Mine; 1998-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ali Co → Booths Creek Mine; 2005-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery S  Sisler → Ali Co; 2005-08-31 to current/open; source msha-controller-operator-history