# Relationship history for MSHA mine 2602500

Current hierarchy: **Manuel R  Vega → Vega Construction & Trucking Co. → Vega Portable Crusher #3**

- 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:** Manuel R  Vega → Vega Portable Crusher #3; 1983-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vega Construction & Trucking Co. → Vega Portable Crusher #3; 2002-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manuel R  Vega → Vega Construction & Trucking Co.; 2002-08-12 to current/open; source msha-controller-operator-history