# Relationship history for MSHA mine 3503967

Current hierarchy: **Keri  Leavitt → Trade West Construction → Baker Creek**

- 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:** Trade West Construction → Baker Creek; 2024-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keri  Leavitt → Baker Creek; 2024-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keri  Leavitt → Trade West Construction; 2024-09-10 to current/open; source msha-controller-operator-history