# Relationship history for MSHA mine 4605096

Current hierarchy: **Mullins Earl W → T & J Coal → Hillside No 2 Mine**

- 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:** Lobb Thomas E → Hillside No 2 Mine; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T & J Coal Corp → Hillside No 2 Mine; 1976-01-01 to 1978-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Lobb Thomas E → T & J Coal Corp; 1976-01-01 to 1978-11-08; source msha-controller-operator-history
- **operator_operates_mine:** T & J Coal → Hillside No 2 Mine; 1978-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Earl W → Hillside No 2 Mine; 1978-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Earl W → T & J Coal; 1978-11-09 to current/open; source msha-controller-operator-history