# Relationship history for MSHA mine 2003430

Current hierarchy: **William A  Shagene → Two Creeks Soil and Stone → Two Creeks 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Two Creeks Soil and Stone → Two Creeks Pit; 2009-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William A  Shagene → Two Creeks Pit; 2009-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William A  Shagene → Two Creeks Soil and Stone; 2009-05-15 to current/open; source msha-controller-operator-history