# Relationship history for MSHA mine 4606748

Current hierarchy: **Redden Steve W → Maple Leaf Coal Company Inc → #54-A 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:** Redden Steve W → #54-A Mine; 1981-06-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Maple Leaf Coal Company Inc → #54-A Mine; 1984-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Redden Steve W → Maple Leaf Coal Company Inc; 1984-02-01 to current/open; source msha-controller-operator-history