# Relationship history for MSHA mine 3608596

Current hierarchy: **Jeffrey I  Confer → Con-Stone Inc → Con-Stone Inc**

- 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:** Con-Stone Inc → Con-Stone Inc; 1996-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Irvin L  Confer → Con-Stone Inc; 1996-12-01 to 2024-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Irvin L  Confer → Con-Stone Inc; 1996-12-01 to 2024-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey I  Confer → Con-Stone Inc; 2024-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey I  Confer → Con-Stone Inc; 2024-10-16 to current/open; source msha-controller-operator-history