# Relationship history for MSHA mine 4606430

Current hierarchy: **Redden Steve W → Maple Leaf Coal Company Inc → #55**

- 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 → #55; 1981-06-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leckie Smokeless Coal Company → #55; 1981-10-01 to 1982-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Sidusco Inc → #55; 1981-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sidusco Inc → Leckie Smokeless Coal Company; 1981-10-01 to 1982-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Lafayette Springs Enterprises Inc → #55; 1982-01-05 to 1984-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Dick J  Plaster → #55; 1982-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dick J  Plaster → Lafayette Springs Enterprises Inc; 1982-01-05 to 1984-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Maple Leaf Coal Company Inc → #55; 1984-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Redden Steve W → Maple Leaf Coal Company Inc; 1984-06-04 to current/open; source msha-controller-operator-history