# Relationship history for MSHA mine 2003238

Current hierarchy: **Dana G  Hayes → ASHLEY LAND DEVELOPMENT CO INC → Plant 1 AP61 Beard Road Pit**

- 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:** ASHLEY LAND DEVELOPMENT CO INC → Plant 1 AP61 Beard Road Pit; 2002-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dana G  Hayes → Plant 1 AP61 Beard Road Pit; 2002-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana G  Hayes → ASHLEY LAND DEVELOPMENT CO INC; 2002-02-27 to current/open; source msha-controller-operator-history