# Relationship history for MSHA mine 4607016

Current hierarchy: **Wilcher G S → Coal Rush Company → Rush Creek #1 Strip**

- 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:** Coal Rush Company → Rush Creek #1 Strip; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wilcher G S → Rush Creek #1 Strip; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilcher G S → Coal Rush Company; 1985-10-01 to current/open; source msha-controller-operator-history