# Relationship history for MSHA mine 2902316

Current hierarchy: **Kenneth E  Finnestad; Delfinia  Finnestad Baca → Ken's Stone → Ken's Stone**

- 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:** Ken's Stone → Ken's Stone; 2006-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth E  Finnestad et al → Ken's Stone; 2006-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth E  Finnestad et al → Ken's Stone; 2006-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Delfinia  Finnestad Baca et al → Ken's Stone; 2006-04-20 to current/open; source msha-controller-operator-history