# Relationship history for MSHA mine 3609863

Current hierarchy: **Philip J  Damiani; Brian W  Bernier → Coaldale Energy, LLC → Great Lakes**

- 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:** Coaldale Energy, LLC → Great Lakes; 2010-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Philip J  Damiani et al → Great Lakes; 2010-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Philip J  Damiani et al → Coaldale Energy, LLC; 2010-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian W  Bernier et al → Coaldale Energy, LLC; 2010-07-13 to current/open; source msha-controller-operator-history