# Relationship history for MSHA mine 4608712

Current hierarchy: **Eddie  Cline → Thunder Bay Inc → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Eddie  Cline → No 2 Mine; 1998-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Thunder Bay Inc → No 2 Mine; 1998-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Cline → Thunder Bay Inc; 1998-04-01 to current/open; source msha-controller-operator-history