# Relationship history for MSHA mine 3401695

Current hierarchy: **John'S Trucking Service → John'S Trucking Service → Sunny Valley 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:** John'S Trucking Service → Sunny Valley Pit; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John'S Trucking Service → Sunny Valley Pit; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John'S Trucking Service → John'S Trucking Service; 1989-09-01 to current/open; source msha-controller-operator-history