# Relationship history for MSHA mine 4609242

Current hierarchy: **Alpha Metallurgical Resources Inc → Alex Energy Inc. → West Fork Surface Mine No 1**

- 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 → West Fork Surface Mine No 1; 1990-09-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Rag Aktiengesellschaft → West Fork Surface Mine No 1; 1995-06-01 to 2004-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → West Fork Surface Mine No 1; 1997-10-20 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Foundation Coal Corporation → West Fork Surface Mine No 1; 2004-07-30 to 2009-07-30; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Creek Co., Inc. → West Fork Surface Mine No 1; 2007-11-07 to 2009-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Foundation Coal Corporation → Laurel Creek Co., Inc.; 2007-11-07 to 2009-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Rag Aktiengesellschaft → Laurel Creek Co., Inc.; 2007-11-07 to 2004-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Aracoma Coal Company, Inc. → West Fork Surface Mine No 1; 2009-07-20 to 2010-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Aracoma Coal Company, Inc.; 2009-07-20 to 2010-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → West Fork Surface Mine No 1; 2009-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Laurel Creek Co., Inc.; 2009-07-31 to 2009-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Alex Energy Inc. → West Fork Surface Mine No 1; 2010-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Alex Energy Inc.; 2010-07-20 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → West Fork Surface Mine No 1; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Aracoma Coal Company, Inc.; 2011-06-01 to 2010-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Alex Energy Inc.; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → West Fork Surface Mine No 1; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Aracoma Coal Company, Inc.; 2016-07-26 to 2010-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Alex Energy Inc.; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → West Fork Surface Mine No 1; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Aracoma Coal Company, Inc.; 2018-11-09 to 2010-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Alex Energy Inc.; 2018-11-09 to current/open; source msha-controller-operator-history