# Relationship history for MSHA mine 4608951

Current hierarchy: **Dale L  Malinzak → No Name → No Name**

- 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:** Dale L  Malinzak → No Name; 2001-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M. W. Platt, Inc. → No Name; 2002-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale L  Malinzak → M. W. Platt, Inc.; 2002-02-18 to current/open; source msha-controller-operator-history