# Relationship history for MSHA mine 5400308

Current hierarchy: **Jorge L  Rosado Soto → J. L R. Contractors, Inc. → GRAVERO SAN SEBASTIAN**

- 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:** Jose A Bechara → GRAVERO SAN SEBASTIAN; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hormigonera Mayaguezana Inc → GRAVERO SAN SEBASTIAN; 1988-07-01 to 2003-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Jose A Bechara → Hormigonera Mayaguezana Inc; 1988-07-01 to 2003-08-25; source msha-controller-operator-history
- **operator_operates_mine:** J. L R. Contractors, Inc. → GRAVERO SAN SEBASTIAN; 2003-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jorge L  Rosado Soto → GRAVERO SAN SEBASTIAN; 2003-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jorge L  Rosado Soto → J. L R. Contractors, Inc.; 2003-08-26 to current/open; source msha-controller-operator-history