# Relationship history for MSHA mine 3605512

Current hierarchy: **Fagley Robert L → Fagley Contracting Company → Ditty 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Fagley Contracting Company → Ditty Strip; 1975-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fagley Robert L → Ditty Strip; 1975-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fagley Robert L → Fagley Contracting Company; 1975-03-01 to current/open; source msha-controller-operator-history