# Relationship history for MSHA mine 3800555

Current hierarchy: **Yvonne W  Rouse → Wilson Sand Company → WARE SHOALS 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

- **controller_controls_mine:** Thomas W  Wilson → WARE SHOALS PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wilson Brothers Sand Company Inc → WARE SHOALS PIT; 1979-01-01 to 2007-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Thomas W  Wilson → Wilson Brothers Sand Company Inc; 1979-01-01 to 2007-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Wilson Sand Company → WARE SHOALS PIT; 2007-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Yvonne W  Rouse → WARE SHOALS PIT; 2007-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yvonne W  Rouse → Wilson Sand Company; 2007-10-16 to current/open; source msha-controller-operator-history