# Relationship history for MSHA mine 4003526

Current hierarchy: **Justin  Clear → Clear Development, LLC → Thorn Hill 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

- **controller_controls_mine:** Justin  Clear → Thorn Hill Quarry; 2008-04-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clear Development, LLC → Thorn Hill Quarry; 2019-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Clear → Clear Development, LLC; 2019-10-17 to current/open; source msha-controller-operator-history