# Relationship history for MSHA mine 3609341

Current hierarchy: **Robert  Cuomo → Roy Coal Co. → Roy #2**

- 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:** CUOMO CONTRACTING AND EXCAVATING → Roy #2; 2005-06-16 to 2011-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Cuomo → Roy #2; 2005-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Cuomo → CUOMO CONTRACTING AND EXCAVATING; 2005-06-16 to 2011-02-13; source msha-controller-operator-history
- **operator_operates_mine:** Roy Coal Co. → Roy #2; 2011-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Cuomo → Roy #2; 2011-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Cuomo → Roy Coal Co.; 2011-02-14 to current/open; source msha-controller-operator-history