# Relationship history for MSHA mine 2902103

Current hierarchy: **Anthony  Villegas → Delmar Crushing Inc → Delmar Crushing Incorporated**

- 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:** Delmar Crushing Inc → Delmar Crushing Incorporated; 1992-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Villegas → Delmar Crushing Incorporated; 1992-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Villegas → Delmar Crushing Inc; 1992-12-01 to current/open; source msha-controller-operator-history