# Relationship history for MSHA mine 1701035

Current hierarchy: **Joshua P Carle → Rockport Granite Inc. → York 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:** Rockport Granite Inc. → York Quarry; 2020-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joshua P Carle → York Quarry; 2020-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joshua P Carle → Rockport Granite Inc.; 2020-04-27 to current/open; source msha-controller-operator-history