# Relationship history for MSHA mine 3601840

Current hierarchy: **Marlene  Reilly; David A.  Bevan → Ginther Coal Co. → Ginther Coal Co. Lucanna Bank**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Ginther Coal Co. → Ginther Coal Co. Lucanna Bank; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David A.  Bevan et al → Ginther Coal Co. Lucanna Bank; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David A.  Bevan et al → Ginther Coal Co.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marlene  Reilly et al → Ginther Coal Co.; 1950-01-01 to current/open; source msha-controller-operator-history