# Relationship history for MSHA mine 3608622

Current hierarchy: **Quintana Capital Group GP Ltd → RoxCoal Inc → Miller 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

- **operator_operates_mine:** K B Coal Inc → Miller Mine; 1997-03-01 to 2003-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Kevin S  Beltowski → Miller Mine; 1997-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin S  Beltowski → K B Coal Inc; 1997-03-01 to 2003-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Severstal Resources → Miller Mine; 1998-03-06 to 2014-08-19; source msha-controller-operator-history
- **operator_operates_mine:** RoxCoal Inc → Miller Mine; 2003-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Severstal Resources → RoxCoal Inc; 2003-08-20 to 2014-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Quintana Capital Group GP Ltd et al → Miller 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