# Relationship history for MSHA mine 4608762

Current hierarchy: **Sev.en Global Investments a.s. → Rockwell Mining LLC → Powellton 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:** Long Branch Energy Corporation → Powellton Tunnel; 1989-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Powellton Tunnel; 1998-03-26 to 2007-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Long Branch Energy → Powellton Tunnel; 1999-02-01 to 2000-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Long Branch Energy Corporation → Long Branch Energy; 1999-02-01 to 2000-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Associated Coal LLC → Powellton Tunnel; 2000-04-01 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Eastern Associated Coal LLC; 2000-04-01 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Powellton Tunnel; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Eastern Associated Coal LLC; 2007-10-31 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Powellton Tunnel; 2015-10-26 to 2020-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Rockwell Mining LLC → Powellton Tunnel; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Rockwell Mining LLC; 2017-09-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Powellton 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