# Relationship history for MSHA mine 5400274

Current hierarchy: **Jose  Terrasa → Terrassa Sand & Gravel Inc → Terrassa Sand & Gravel 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Jose  Terrasa → Terrassa Sand & Gravel Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Antonio Aguayo & Associate → Terrassa Sand & Gravel Incorporated; 1983-08-01 to 1985-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Aguayo Antonio & Hector Hereter → Terrassa Sand & Gravel Incorporated; 1983-08-01 to 1985-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Aguayo Antonio & Hector Hereter → Antonio Aguayo & Associate; 1983-08-01 to 1985-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Candelero Sand & Gravel Inc → Terrassa Sand & Gravel Incorporated; 1985-04-29 to 1986-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Suarez Roberto → Terrassa Sand & Gravel Incorporated; 1985-04-29 to 1986-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Suarez Roberto → Candelero Sand & Gravel Inc; 1985-04-29 to 1986-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Terrassa Sand & Gravel Inc → Terrassa Sand & Gravel Incorporated; 1986-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose  Terrasa → Terrassa Sand & Gravel Inc; 1986-05-09 to current/open; source msha-controller-operator-history