# Relationship history for MSHA mine 3610044

Current hierarchy: **Quintana Capital Group GP Ltd → RoxCoal, Inc → A-Seam Deep 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Severstal Resources → A-Seam Deep Mine; 1998-03-06 to 2014-08-19; source msha-controller-operator-history
- **operator_operates_mine:** RoxCoal, Inc → A-Seam Deep Mine; 2013-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Severstal Resources → RoxCoal, Inc; 2013-05-16 to 2014-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Quintana Capital Group GP Ltd et al → A-Seam Deep Mine; 2014-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quintana Capital Group GP Ltd et al → RoxCoal, Inc; 2014-08-20 to current/open; source msha-controller-operator-history