# Relationship history for MSHA mine 4609147

Current hierarchy: **Everett Gordon Justice → Ed Coal Inc → No 1 Surface 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Ed Coal Inc → No 1 Surface Mine; 2006-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Everett Gordon Justice → No 1 Surface Mine; 2006-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Everett Gordon Justice → Ed Coal Inc; 2006-02-15 to current/open; source msha-controller-operator-history