# Relationship history for MSHA mine 5001666

Current hierarchy: **Mick  Killion; Mary Lou  Killion → Killion Land Company, LLC → Extec 5000**

- 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:** Killion Land Company, LLC → Extec 5000; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mick  Killion et al → Extec 5000; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mick  Killion et al → Killion Land Company, LLC; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary Lou  Killion et al → Killion Land Company, LLC; 2000-08-01 to current/open; source msha-controller-operator-history