# Relationship history for MSHA mine 5400450

Current hierarchy: **Juan M Carro → Carro & Carro Enterprises Inc → AC-020601**

- 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

- **controller_controls_mine:** Juan M Carro → AC-020601; 2002-12-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carro & Carro Enterprises Inc → AC-020601; 2003-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Juan M Carro → Carro & Carro Enterprises Inc; 2003-03-18 to current/open; source msha-controller-operator-history