# Relationship history for MSHA mine 2002724

Current hierarchy: **Velting William → Woodland Paving Company → Woodland Stone Plant**

- 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

- **controller_controls_mine:** Velting William → Woodland Stone Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Woodland Paving Company → Woodland Stone Plant; 1984-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Velting William → Woodland Paving Company; 1984-09-01 to current/open; source msha-controller-operator-history