# Relationship history for MSHA mine 3002962

Current hierarchy: **Bernas-Bowdren Holdings Inc → Jml Quarries Inc → Jml Quarries Incorporated**

- 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:** Wurtsboro Aggregates Ltd → Jml Quarries Incorporated; 1990-05-01 to 1994-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Zeno Angelo Estate → Jml Quarries Incorporated; 1990-05-01 to 1994-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Zeno Angelo Estate → Wurtsboro Aggregates Ltd; 1990-05-01 to 1994-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Jml Quarries Inc → Jml Quarries Incorporated; 1994-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bernas-Bowdren Holdings Inc → Jml Quarries Incorporated; 1994-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bernas-Bowdren Holdings Inc → Jml Quarries Inc; 1994-04-22 to current/open; source msha-controller-operator-history