# Relationship history for MSHA mine 1601185

Current hierarchy: **Owens Willie Jr → Willie Owens Jr Sand & Gravel → Black Cat 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Double A Aggregates Inc → Black Cat Pit; 1989-03-01 to 1991-12-04; source msha-controller-operator-history
- **controller_controls_mine:** Albert  Pierre → Black Cat Pit; 1989-03-01 to 1991-12-04; source msha-controller-operator-history
- **controller_controls_operator:** Albert  Pierre → Double A Aggregates Inc; 1989-03-01 to 1991-12-04; source msha-controller-operator-history
- **operator_operates_mine:** Willie Owens Jr Sand & Gravel → Black Cat Pit; 1991-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Owens Willie Jr → Black Cat Pit; 1991-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Owens Willie Jr → Willie Owens Jr Sand & Gravel; 1991-12-05 to current/open; source msha-controller-operator-history