# Relationship history for MSHA mine 3500597

Current hierarchy: **Eucon Corporation → De Atley Company Inc → De Atley Co-Plant #3**

- 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:** Eucon Corporation → De Atley Co-Plant #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Waybo Inc → De Atley Co-Plant #3; 1980-06-01 to 1981-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Easley Wayne → De Atley Co-Plant #3; 1980-06-01 to 1981-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Easley Wayne → Waybo Inc; 1980-06-01 to 1981-08-05; source msha-controller-operator-history
- **operator_operates_mine:** De Atley Company Inc → De Atley Co-Plant #3; 1981-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eucon Corporation → De Atley Company Inc; 1981-08-06 to current/open; source msha-controller-operator-history