# Relationship history for MSHA mine 4606263

Current hierarchy: **Alpha Metallurgical Resources Inc → Brooks Run South Mining, LLC → Wyoming No 2**

- 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:** Massey Energy Company → Wyoming No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Robinson-Phillips Coal Company Inc → Wyoming No 2; 1980-05-01 to 1986-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Robinson-Phillips Coal Company Inc; 1980-05-01 to 1986-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Black Horse Coal Mining & Sales Inc → Wyoming No 2; 1986-05-12 to 1989-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Thomas Lewis C → Wyoming No 2; 1986-05-12 to 1989-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Thomas Lewis C → Black Horse Coal Mining & Sales Inc; 1986-05-12 to 1989-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Robinson-Phillips Coal Company Inc → Wyoming No 2; 1989-01-23 to 2007-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Robinson-Phillips Coal Company Inc; 1989-01-23 to 2007-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Wyoming No 2; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Wyoming No 2; 2007-06-30 to 2016-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Run Mining Company LLC → Wyoming No 2; 2007-10-04 to 2014-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Brooks Run Mining Company LLC; 2007-10-04 to 2014-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Brooks Run South Mining, LLC → Wyoming No 2; 2014-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Brooks Run South Mining, LLC; 2014-01-20 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Wyoming No 2; 2016-07-26 to 2017-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Brooks Run Mining Company LLC; 2016-07-26 to 2014-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Wyoming No 2; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Brooks Run South Mining, LLC; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Pristine Clean Energy LLC → Wyoming No 2; 2017-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pristine Clean Energy LLC → Brooks Run Mining Company LLC; 2017-10-05 to 2014-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Wyoming No 2; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Brooks Run South Mining, LLC; 2018-11-09 to current/open; source msha-controller-operator-history