# Relationship history for MSHA mine 3609270

Current hierarchy: **Kenneth J  Mirch → Catskill Stone Limited Inc. → Catskill Stone Limited Inc.**

- 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:** Catskill Stone Limited Inc. → Catskill Stone Limited Inc.; 2004-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth J  Mirch → Catskill Stone Limited Inc.; 2004-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth J  Mirch → Catskill Stone Limited Inc.; 2004-07-27 to current/open; source msha-controller-operator-history