# Relationship history for MSHA mine 4103046

Current hierarchy: **Gloria B  Solis → Bravo Materials Inc → Asphalt Plant**

- 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:** Laredo Asphalt & Materials → Asphalt Plant; 1981-01-01 to 1987-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Solis Victor M → Asphalt Plant; 1981-01-01 to 1987-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Solis Victor M → Laredo Asphalt & Materials; 1981-01-01 to 1987-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Bravo Materials Inc → Asphalt Plant; 1987-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gloria B  Solis → Asphalt Plant; 1987-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gloria B  Solis → Bravo Materials Inc; 1987-06-01 to current/open; source msha-controller-operator-history