# Relationship history for MSHA mine 5400280

Current hierarchy: **Melba  Figueroa; Edgar  Figueroa → Productora de Agregados, Inc. → Productora de Agregados Isabela**

- 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

- **controller_controls_mine:** Edgar  Figueroa et al → Productora de Agregados Isabela; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cantera G Benitez & Sons Inc → Productora de Agregados Isabela; 1985-05-01 to 1990-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Gilberto  Benitez → Productora de Agregados Isabela; 1985-05-01 to 1990-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Gilberto  Benitez → Cantera G Benitez & Sons Inc; 1985-05-01 to 1990-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Cantera Gutierrez → Productora de Agregados Isabela; 1990-10-02 to 2021-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Nelson  Gutierrez → Productora de Agregados Isabela; 1990-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nelson  Gutierrez → Cantera Gutierrez; 1990-10-02 to 2021-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Productora de Agregados, Inc. → Productora de Agregados Isabela; 2021-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edgar  Figueroa et al → Productora de Agregados, Inc.; 2021-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melba  Figueroa et al → Productora de Agregados, Inc.; 2021-07-14 to current/open; source msha-controller-operator-history