# Relationship history for MSHA mine 4608913

Current hierarchy: **Alpha Metallurgical Resources Inc → Marfork Coal Company Inc → Marsh Fork Eagle Mine**

- 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 → Marsh Fork Eagle Mine; 1993-04-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Marsh Fork Eagle Mine; 1994-10-15 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Douglas M  Epling → Marsh Fork Eagle Mine; 1994-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Marsh Fork Eagle Mine; 1996-02-05 to 2011-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Performance Coal Company → Marsh Fork Eagle Mine; 2001-06-01 to 2004-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Performance Coal Company; 2001-06-01 to 2004-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Spartan Mining Company → Marsh Fork Eagle Mine; 2004-02-10 to 2004-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Spartan Mining Company; 2004-02-10 to 2004-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Edge Mining, Inc. → Marsh Fork Eagle Mine; 2004-04-15 to 2005-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Douglas M  Epling → Mountain Edge Mining, Inc.; 2004-04-15 to 2005-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Marfork Coal Company Inc → Marsh Fork Eagle Mine; 2005-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Marfork Coal Company Inc; 2005-02-26 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Marsh Fork Eagle Mine; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Performance Coal Company; 2011-06-01 to 2004-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Spartan Mining Company; 2011-06-01 to 2004-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Marfork Coal Company Inc; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Marsh Fork Eagle Mine; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Spartan Mining Company; 2016-07-26 to 2004-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Marfork Coal Company Inc; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Marsh Fork Eagle Mine; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Performance Coal Company; 2016-07-26 to 2004-02-09; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Marsh Fork Eagle Mine; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Spartan Mining Company; 2018-11-09 to 2004-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Marfork Coal Company Inc; 2018-11-09 to current/open; source msha-controller-operator-history