# Relationship history for MSHA mine 1519236

Current hierarchy: **Arch Resources Inc → ICG Hazard, LLC → First Creek Mine**

- 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:** International Coal Group Inc (ICG) → First Creek Mine; 2004-10-02 to 2011-06-14; source msha-controller-operator-history
- **operator_operates_mine:** ICG Hazard, LLC → First Creek Mine; 2008-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** International Coal Group Inc (ICG) → ICG Hazard, LLC; 2008-07-09 to 2011-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Arch Resources Inc → First Creek Mine; 2011-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arch Resources Inc → ICG Hazard, LLC; 2011-06-15 to current/open; source msha-controller-operator-history