# Relationship history for MSHA mine 2302415

Current hierarchy: **Thomas Family Trust → Thomas Excavating → Thomas Mine 6**

- 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:** Thomas Excavating → Thomas Mine 6; 2011-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith L  Thomas → Thomas Mine 6; 2011-03-25 to 2019-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Keith L  Thomas → Thomas Excavating; 2011-03-25 to 2019-10-16; source msha-controller-operator-history
- **controller_controls_mine:** Thomas Family Trust → Thomas Mine 6; 2019-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas Family Trust → Thomas Excavating; 2019-10-17 to current/open; source msha-controller-operator-history