# Relationship history for MSHA mine 3602603

Current hierarchy: **Paris  Meadows → Meadows & Leonard Mining Inc → Meadows & Leonard #1 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:** Longwall Mining Inc → Meadows & Leonard #1 Mine; 1950-01-01 to 1991-07-09; source msha-controller-operator-history
- **controller_controls_mine:** George  Ledney → Meadows & Leonard #1 Mine; 1950-01-01 to 1991-07-09; source msha-controller-operator-history
- **controller_controls_operator:** George  Ledney → Longwall Mining Inc; 1950-01-01 to 1991-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Meadows & Leonard Mining Inc → Meadows & Leonard #1 Mine; 1991-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paris  Meadows et al → Meadows & Leonard #1 Mine; 1991-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paris  Meadows et al → Meadows & Leonard Mining Inc; 1991-07-10 to current/open; source msha-controller-operator-history