# Relationship history for MSHA mine 5400110

Current hierarchy: **Ricardo  Cardona → Master Concrete and Aggregates LLC → MA Planta Aguadilla**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cantera Medina Inc → MA Planta Aguadilla; 1950-01-01 to 2006-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Alejandro  Lopez → MA Planta Aguadilla; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alejandro  Lopez → Cantera Medina Inc; 1950-01-01 to 2006-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Victor S  Maldonado  et al → MA Planta Aguadilla; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Master Aggregates Toa Baja Corp Pta 6 Aguadilla → MA Planta Aguadilla; 2006-01-11 to 2010-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Victor S  Maldonado  et al → Master Aggregates Toa Baja Corp Pta 6 Aguadilla; 2006-01-11 to 2010-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Ricardo  Cardona et al → Master Aggregates Toa Baja Corp Pta 6 Aguadilla; 2006-01-11 to 2010-02-27; source msha-controller-operator-history
- **operator_operates_mine:** Cantera Medina, Inc. → MA Planta Aguadilla; 2010-02-28 to 2010-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Alejandro  Lopez → Cantera Medina, Inc.; 2010-02-28 to 2010-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Master Aggregates Toa Baja Corp. → MA Planta Aguadilla; 2010-09-21 to 2014-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Ricardo  Cardona et al → Master Aggregates Toa Baja Corp.; 2010-09-21 to 2014-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Victor S  Maldonado  et al → Master Aggregates Toa Baja Corp.; 2010-09-21 to 2014-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Mini Master Concrete Service Inc → MA Planta Aguadilla; 2014-10-15 to 2017-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Carmen M  Betancourt → MA Planta Aguadilla; 2014-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carmen M  Betancourt → Mini Master Concrete Service Inc; 2014-10-15 to 2017-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Master Concrete and Aggregates LLC → MA Planta Aguadilla; 2017-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ricardo  Cardona → MA Planta Aguadilla; 2017-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricardo  Cardona → Master Concrete and Aggregates LLC; 2017-08-24 to current/open; source msha-controller-operator-history