# Relationship history for MSHA mine 0600714

Current hierarchy: **Daniel  Stoughton → MOUNTAINTOP TRUCKING → WINSTED 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** MOUNTAINTOP TRUCKING → WINSTED QUARRY; 2004-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel  Stoughton → WINSTED QUARRY; 2004-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Stoughton → MOUNTAINTOP TRUCKING; 2004-03-25 to current/open; source msha-controller-operator-history