# Relationship history for MSHA mine 4503095

Current hierarchy: **James C O'Connor → J C O'Connor Construction Inc → Hilperts Pit**

- 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

- **controller_controls_mine:** James C O'Connor → Hilperts Pit; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J C O'Connor Construction Inc → Hilperts Pit; 1986-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C O'Connor → J C O'Connor Construction Inc; 1986-07-01 to current/open; source msha-controller-operator-history