# Relationship history for MSHA mine 3609309

Current hierarchy: **Michael  Scopelliti → Excel Coal Co → Three S Slope**

- 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

- **operator_operates_mine:** Excel Coal Co → Three S Slope; 2005-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Scopelliti → Three S Slope; 2005-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Scopelliti → Excel Coal Co; 2005-02-18 to current/open; source msha-controller-operator-history