# Relationship history for MSHA mine 5400227

Current hierarchy: **Eliseo Toledo  Rodriguez → ETR Group, PSC → Cantera Marueno**

- 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:** Almodovar'S Heavy Machines Inc → Cantera Marueno; 1978-12-01 to 1985-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Angel Luis  Almodovar → Cantera Marueno; 1978-12-01 to 1985-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Angel Luis  Almodovar → Almodovar'S Heavy Machines Inc; 1978-12-01 to 1985-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Tallaboa Transport Inc → Cantera Marueno; 1985-09-19 to 2015-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Rosa I  Quintana → Cantera Marueno; 1985-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rosa I  Quintana → Tallaboa Transport Inc; 1985-09-19 to 2015-01-28; source msha-controller-operator-history
- **operator_operates_mine:** ETR Group, PSC → Cantera Marueno; 2015-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eliseo Toledo  Rodriguez → Cantera Marueno; 2015-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eliseo Toledo  Rodriguez → ETR Group, PSC; 2015-01-29 to current/open; source msha-controller-operator-history