# Relationship history for MSHA mine 4003471

Current hierarchy: **James Carl  Wallace → carl wallace quarry → wallace 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

- **controller_controls_mine:** James Carl  Wallace → wallace quarry; 2009-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** carl wallace quarry → wallace quarry; 2017-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Carl  Wallace → carl wallace quarry; 2017-03-20 to current/open; source msha-controller-operator-history