# Relationship history for MSHA mine 5400095

Current hierarchy: **Raul  Candelario → Cantera Montegrande Inc → Cantera Montegrande Incorporated**

- 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 San Miguel Inc → Cantera Montegrande Incorporated; 1950-01-01 to 1989-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Lugo Gustavo Ramirez → Cantera Montegrande Incorporated; 1950-01-01 to 1989-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Lugo Gustavo Ramirez → Cantera San Miguel Inc; 1950-01-01 to 1989-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Cantera Montegrande Inc → Cantera Montegrande Incorporated; 1989-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Raul  Candelario → Cantera Montegrande Incorporated; 1989-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raul  Candelario → Cantera Montegrande Inc; 1989-07-26 to current/open; source msha-controller-operator-history