# Relationship history for MSHA mine 4608529

Current hierarchy: **Sev.en Global Investments a.s. → Rockwell Mining LLC → Kopperston Tunnel**

- 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:** Hanson PLC → Kopperston Tunnel; 1987-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp → Kopperston Tunnel; 1995-08-01 to 1998-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Eastern Associated Coal Corp; 1995-08-01 to 1998-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Kopperston Tunnel; 1998-03-26 to 2007-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal Corp → Kopperston Tunnel; 1998-05-19 to 2018-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Eastern Associated Coal Corp; 1998-05-19 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Kopperston Tunnel; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Eastern Associated Coal Corp; 2007-10-31 to 2018-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Kopperston Tunnel; 2015-10-26 to 2020-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Rockwell Mining LLC → Kopperston Tunnel; 2018-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Rockwell Mining LLC; 2018-11-05 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Kopperston Tunnel; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Rockwell Mining LLC; 2020-06-01 to current/open; source msha-controller-operator-history