# Relationship history for MSHA mine 2302163

Current hierarchy: **Michael G  King; Steve  Stipanovich → Midwest Coal Llc → Tiger 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Midwest Coal Llc → Tiger Mine; 1997-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Stipanovich et al → Tiger Mine; 1997-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Stipanovich et al → Midwest Coal Llc; 1997-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael G  King et al → Midwest Coal Llc; 1997-12-01 to current/open; source msha-controller-operator-history