# Relationship history for MSHA mine 4103161

Current hierarchy: **Colville H E → Paisano Concrete Company → Paisano Sand 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Colville H E → Paisano Sand Plant; 1977-11-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paisano Concrete Company → Paisano Sand Plant; 1983-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colville H E → Paisano Concrete Company; 1983-03-01 to current/open; source msha-controller-operator-history