# Relationship history for MSHA mine 0504608

Current hierarchy: **Anthony A  Blasi → Anthony A Blasi Trucking & Earthmoving → CORRAL PIT**

- 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:** Ruben Corral → CORRAL PIT; 1998-01-01 to 1999-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Corral Ruben → CORRAL PIT; 1998-01-01 to 1999-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Corral Ruben → Ruben Corral; 1998-01-01 to 1999-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Anthony A Blasi Trucking & Earthmoving → CORRAL PIT; 1999-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Anthony A  Blasi → CORRAL PIT; 1999-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony A  Blasi → Anthony A Blasi Trucking & Earthmoving; 1999-05-19 to current/open; source msha-controller-operator-history