# Relationship history for MSHA mine 4300612

Current hierarchy: **All States Materials Group → Trew Stone, LLC → Trew Stone-Irasburg**

- 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:** J. Hutchins Inc. → Trew Stone-Irasburg; 2004-07-28 to 2026-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Jeff J  Hutchins → Trew Stone-Irasburg; 2004-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff J  Hutchins → J. Hutchins Inc.; 2004-07-28 to 2026-04-29; source msha-controller-operator-history
- **controller_controls_mine:** All States Materials Group → Trew Stone-Irasburg; 2006-03-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Trew Stone, LLC → Trew Stone-Irasburg; 2026-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** All States Materials Group → Trew Stone, LLC; 2026-04-30 to current/open; source msha-controller-operator-history