# Relationship history for MSHA mine 0503833

Current hierarchy: **Rodgers Construction Companies Inc → Palisade Construction Company → Kenney 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:** Rodgers Construction Companies Inc → Kenney Pit; 1981-06-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Palisade Construction Company → Kenney Pit; 1983-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodgers Construction Companies Inc → Palisade Construction Company; 1983-02-01 to current/open; source msha-controller-operator-history