# Relationship history for MSHA mine 4606189

Current hierarchy: **Cline Fred & James Henderson → Tina Coal Company → No 3 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:** Tina Coal Company → No 3 Mine; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cline Fred & James Henderson → No 3 Mine; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cline Fred & James Henderson → Tina Coal Company; 1980-07-01 to current/open; source msha-controller-operator-history