# Relationship history for MSHA mine 5400157

Current hierarchy: **Luis A  Reyes-Leon → P.R. Productos de Agregados, Inc. → Cantera Naranjo**

- 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:** Empresas Tito Castro Inc → Cantera Naranjo; 1950-01-01 to 2012-07-04; source msha-controller-operator-history
- **controller_controls_mine:** Jose A Castro  (Tormos) → Cantera Naranjo; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose A Castro  (Tormos) → Empresas Tito Castro Inc; 1950-01-01 to 2012-07-04; source msha-controller-operator-history
- **operator_operates_mine:** P.R. Productos de Agregados, Inc. → Cantera Naranjo; 2012-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luis A  Reyes-Leon → Cantera Naranjo; 2012-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luis A  Reyes-Leon → P.R. Productos de Agregados, Inc.; 2012-07-05 to current/open; source msha-controller-operator-history