# Relationship history for MSHA mine 4609532

Current hierarchy: **Sev.en Global Investments a.s. → Rockwell Mining, LLC → Salem Auger #41**

- 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:** Alpha Natural Resources, Inc. → Salem Auger #41; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Salem Auger #41; 2015-10-26 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Salem Auger #41; 2016-07-26 to 2017-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Alley Trucking LLC → Salem Auger #41; 2017-03-31 to 2019-03-18; source msha-controller-operator-history
- **controller_controls_mine:** James D  Alley → Salem Auger #41; 2017-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Alley → Alley Trucking LLC; 2017-03-31 to 2019-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Pristine Clean Energy LLC → Salem Auger #41; 2017-10-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Run Mining Co., LLC → Salem Auger #41; 2019-03-19 to 2022-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Brooks Run Mining Co., LLC; 2019-03-19 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Brooks Run Mining Co., LLC; 2019-03-19 to 2017-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Pristine Clean Energy LLC → Brooks Run Mining Co., LLC; 2019-03-19 to 2022-07-21; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Salem Auger #41; 2020-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rockwell Mining, LLC → Salem Auger #41; 2022-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Rockwell Mining, LLC; 2022-07-22 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Rockwell Mining, LLC; 2022-07-22 to current/open; source msha-controller-operator-history