# Relationship history for MSHA mine 2602472

Current hierarchy: **James L  Delaney → Delaney Gravel Pits → Delaney Gravel Pits**

- 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:** Delaney Gravel Pits → Delaney Gravel Pits; 2000-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James L  Delaney → Delaney Gravel Pits; 2000-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Delaney → Delaney Gravel Pits; 2000-12-16 to current/open; source msha-controller-operator-history