# Relationship history for MSHA mine 1519436

Current hierarchy: **Dean K  Hunt → Executive Coal LLC → Patrick Branch No. 1**

- 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

- **controller_controls_mine:** Dean K  Hunt → Patrick Branch No. 1; 2008-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Executive Coal LLC → Patrick Branch No. 1; 2009-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean K  Hunt → Executive Coal LLC; 2009-10-13 to current/open; source msha-controller-operator-history