# Relationship history for MSHA mine 3304350

Current hierarchy: **Melvin  Schaney → Melvin L. Schaney → Schaney Mining (Strip)**

- 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:** Melvin L. Schaney → Schaney Mining (Strip); 1995-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Melvin  Schaney → Schaney Mining (Strip); 1995-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melvin  Schaney → Melvin L. Schaney; 1995-02-01 to current/open; source msha-controller-operator-history