# Relationship history for MSHA mine 4607963

Current hierarchy: **East William A → Mid Seam Leasing Inc → No 1 Mine (1)**

- 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:** R D J Mining Corp → No 1 Mine (1); 1990-11-01 to 1995-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Charles Douglas  Bailey → No 1 Mine (1); 1990-11-01 to 1995-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Charles Douglas  Bailey → R D J Mining Corp; 1990-11-01 to 1995-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Mid Seam Leasing Inc → No 1 Mine (1); 1995-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** East William A → No 1 Mine (1); 1995-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** East William A → Mid Seam Leasing Inc; 1995-04-03 to current/open; source msha-controller-operator-history