# Relationship history for MSHA mine 4609144

Current hierarchy: **Patriot Coal Corporation → Black Stallion Coal Company, LLC → Black Walnut No 3 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:** Peabody Energy Corporation → Black Walnut No 3 Mine; 2004-05-17 to 2007-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Black Walnut No 3 Mine; 2005-02-22 to 2007-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Black Walnut Coal Company → Black Walnut No 3 Mine; 2006-02-01 to 2013-12-17; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Black Walnut Coal Company; 2006-02-01 to 2007-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Black Walnut No 3 Mine; 2007-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Black Walnut Coal Company; 2007-11-01 to 2013-12-17; source msha-controller-operator-history
- **operator_operates_mine:** Black Stallion Coal Company, LLC → Black Walnut No 3 Mine; 2013-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Black Stallion Coal Company, LLC; 2013-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Black Stallion Coal Company, LLC; 2013-12-18 to 2007-10-31; source msha-controller-operator-history