# Relationship history for MSHA mine 3602887

Current hierarchy: **Pacine Carl M → Pacine Coal Company → Diamond And Orchard Veins**

- 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

- **operator_operates_mine:** Pacine Coal Company → Diamond And Orchard Veins; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pacine Carl M → Diamond And Orchard Veins; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pacine Carl M → Pacine Coal Company; 1950-01-01 to current/open; source msha-controller-operator-history