# Relationship history for MSHA mine 4403693

Current hierarchy: **Matney Perry → Sue Coal Company Inc → No 8 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:** Matney Perry → No 8 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sue Coal Company Inc → No 8 Mine; 1974-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matney Perry → Sue Coal Company Inc; 1974-07-01 to current/open; source msha-controller-operator-history