# Relationship history for MSHA mine 3609254

Current hierarchy: **Frank J Raducz, Sr. Family Trust → Raducz Stone Corp. → Two Rock Stone Co. LLC**

- 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:** Frank J.  Raducz → Two Rock Stone Co. LLC; 2000-10-01 to 2020-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Raducz Stone Corp. → Two Rock Stone Co. LLC; 2004-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank J.  Raducz → Raducz Stone Corp.; 2004-06-08 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Frank J Raducz, Sr. Family Trust → Two Rock Stone Co. LLC; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank J Raducz, Sr. Family Trust → Raducz Stone Corp.; 2020-06-01 to current/open; source msha-controller-operator-history