# Relationship history for MSHA mine 0504005

Current hierarchy: **Thoe Aggregates → Thoe Aggregates → Thoe Agg Portable #1**

- 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:** Thoe Aggregates → Thoe Agg Portable #1; 1985-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thoe Aggregates → Thoe Agg Portable #1; 1985-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thoe Aggregates → Thoe Aggregates; 1985-01-01 to current/open; source msha-controller-operator-history