# Relationship history for MSHA mine 2602046

Current hierarchy: **Bart  Hiatt → A & K Earth Movers Inc → Bella Vista Pit**

- 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:** Bart  Hiatt → Bella Vista Pit; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bella Vista Pit Inc → Bella Vista Pit; 1988-02-01 to 1994-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  Peek → Bella Vista Pit; 1988-02-01 to 1994-03-13; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  Peek → Bella Vista Pit Inc; 1988-02-01 to 1994-03-13; source msha-controller-operator-history
- **operator_operates_mine:** A & K Earth Movers Inc → Bella Vista Pit; 1994-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bart  Hiatt → A & K Earth Movers Inc; 1994-03-14 to current/open; source msha-controller-operator-history