# Relationship history for MSHA mine 5400240

Current hierarchy: **Jose  Carro → Construcciones Jose Carro S.E. → CANTERA CANAS**

- 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:** Puerto Rican Cement Company Inc → CANTERA CANAS; 1950-01-01 to 2002-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Cemex de Puerto Rico → CANTERA CANAS; 1979-10-01 to 2017-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Puerto Rican Cement Company Inc → Cemex de Puerto Rico; 1979-10-01 to 2002-11-29; source msha-controller-operator-history
- **controller_controls_mine:** Jose  Carro → CANTERA CANAS; 1994-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CANTERA CANAS; 2002-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex de Puerto Rico; 2002-11-30 to 2017-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Construcciones Jose Carro S.E. → CANTERA CANAS; 2017-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose  Carro → Construcciones Jose Carro S.E.; 2017-02-13 to current/open; source msha-controller-operator-history