# Relationship history for MSHA mine 3401310

Current hierarchy: **Hodges Trucking Company Inc → Western Plains Materials → Jones Quarry**

- 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:** Western Plains Materials → Jones Quarry; 1981-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hodges Trucking Company Inc → Jones Quarry; 1981-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hodges Trucking Company Inc → Western Plains Materials; 1981-02-26 to current/open; source msha-controller-operator-history