# Relationship history for MSHA mine 3201102

Current hierarchy: **Leland  Cook; Heather  Cook; Isaiah  Cook → Liberty Dirtwork → Iron Hollow**

- 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:** Liberty Dirtwork → Iron Hollow; 2026-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leland  Cook → Iron Hollow; 2026-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leland  Cook → Liberty Dirtwork; 2026-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Isaiah  Cook → Liberty Dirtwork; 2026-09-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heather  Cook → Liberty Dirtwork; 2026-09-08 to current/open; source msha-controller-operator-history