# Relationship history for MSHA mine 3303820

Current hierarchy: **Broshear Robert F → Aggregate Services Inc → Aggregate Services Incorporated**

- 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

- **operator_operates_mine:** Aggregates Service Inc → Aggregate Services Incorporated; 1980-04-01 to 1981-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Kuch Paul → Aggregate Services Incorporated; 1980-04-01 to 1981-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Kuch Paul → Aggregates Service Inc; 1980-04-01 to 1981-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Aggregate Services Inc → Aggregate Services Incorporated; 1981-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Broshear Robert F → Aggregate Services Incorporated; 1981-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Broshear Robert F → Aggregate Services Inc; 1981-06-10 to current/open; source msha-controller-operator-history