# Relationship history for MSHA mine 2402468

Current hierarchy: **Brian J  Caballero → Twin Creek Quarries LLC → Twin Creeks**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Twin Creek Quarries LLC → Twin Creeks; 2007-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian J  Caballero → Twin Creeks; 2007-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian J  Caballero → Twin Creek Quarries LLC; 2007-04-03 to current/open; source msha-controller-operator-history