# Relationship history for MSHA mine 2002967

Current hierarchy: **Dana G  Hayes → Ashley Land Development Co., Inc. → Plant 2 AP35 Muir 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Lewis E  Hayes → Plant 2 AP35 Muir Road Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hayes Washed Sand & Gravel Company Inc → Plant 2 AP35 Muir Road Pit; 1996-04-01 to 2010-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Lewis E  Hayes → Hayes Washed Sand & Gravel Company Inc; 1996-04-01 to 2010-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Dana G  Hayes → Plant 2 AP35 Muir Road Pit; 2002-02-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ashley Land Development Co., Inc. → Plant 2 AP35 Muir Road Pit; 2010-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana G  Hayes → Ashley Land Development Co., Inc.; 2010-03-30 to current/open; source msha-controller-operator-history