# Relationship history for MSHA mine 0405739

Current hierarchy: **Tim A  Ochotorena; Sandra L  Ochotorena → TNS TRUCKING & READY MIX → 1000 Springs 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:** TNS TRUCKING & READY MIX → 1000 Springs Pit; 2007-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tim A  Ochotorena et al → 1000 Springs Pit; 2007-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim A  Ochotorena et al → TNS TRUCKING & READY MIX; 2007-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandra L  Ochotorena et al → TNS TRUCKING & READY MIX; 2007-10-18 to current/open; source msha-controller-operator-history