# Relationship history for MSHA mine 3503989

Current hierarchy: **Doug  Cox → CRP & Hauling LLC. → CRP & Rupp 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

- **operator_operates_mine:** CRP & Hauling LLC. → CRP & Rupp Pit; 2026-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug  Cox → CRP & Rupp Pit; 2026-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Cox → CRP & Hauling LLC.; 2026-05-27 to current/open; source msha-controller-operator-history