# Relationship history for MSHA mine 2501297

Current hierarchy: **Dewey  Peterson; Diane  Peterson → crosstrails gravel → johnson 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

- **operator_operates_mine:** crosstrails gravel → johnson pit; 2016-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dewey  Peterson et al → johnson pit; 2016-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dewey  Peterson et al → crosstrails gravel; 2016-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Diane  Peterson et al → crosstrails gravel; 2016-03-24 to current/open; source msha-controller-operator-history