# Relationship history for MSHA mine 1100624

Current hierarchy: **Reddy V S → V-Day Mining Company → V-Day Mine**

- 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:** V-Day Coal Company → V-Day Mine; 1950-01-01 to 1973-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Zamberletti Karl → V-Day Mine; 1950-01-01 to 1973-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Zamberletti Karl → V-Day Coal Company; 1950-01-01 to 1973-09-30; source msha-controller-operator-history
- **operator_operates_mine:** V-Day Mining Company → V-Day Mine; 1973-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reddy V S → V-Day Mine; 1973-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reddy V S → V-Day Mining Company; 1973-10-01 to current/open; source msha-controller-operator-history