# Relationship history for MSHA mine 5400036

Current hierarchy: **Pablo F  Del Valle Rivera → DORADO QUARRY AND RECYCLING CORP → CANTERA DORADO**

- 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:** Cantera Dorado Inc → CANTERA DORADO; 1950-01-01 to 2015-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Emerita  Rivera → CANTERA DORADO; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emerita  Rivera → Cantera Dorado Inc; 1950-01-01 to 2015-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Pablo F  Del Valle Rivera → CANTERA DORADO; 2013-10-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dorado Quarry And Recycling Corp → CANTERA DORADO; 2015-11-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pablo F  Del Valle Rivera → Dorado Quarry And Recycling Corp; 2015-11-23 to current/open; source msha-controller-operator-history