# Relationship history for MSHA mine 4609164

Current hierarchy: **Alpha Metallurgical Resources Inc → Mammoth Coal Company → Eagle #1 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Massey Energy Company → Eagle #1 Mine; 1996-02-05 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** John C  Smith Jr → Eagle #1 Mine; 2001-03-19 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → Eagle #1 Mine; 2006-01-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Fuels LLC → Eagle #1 Mine; 2006-05-10 to 2006-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Energy Coal Resources Inc → Appalachian Fuels LLC; 2006-05-10 to 2006-10-01; source msha-controller-operator-history
- **controller_controls_operator:** John C  Smith Jr → Appalachian Fuels LLC; 2006-05-10 to 2006-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Energy Coal Resources Inc → Eagle #1 Mine; 2006-08-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Premium Fuels LLC → Eagle #1 Mine; 2006-10-02 to 2009-11-01; source msha-controller-operator-history
- **controller_controls_operator:** Energy Coal Resources Inc → Appalachian Premium Fuels LLC; 2006-10-02 to 2009-11-01; source msha-controller-operator-history
- **operator_operates_mine:** Mammoth Coal Company → Eagle #1 Mine; 2009-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Mammoth Coal Company; 2009-11-02 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Eagle #1 Mine; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Mammoth Coal Company; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Eagle #1 Mine; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Mammoth Coal Company; 2016-07-26 to 2018-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Metallurgical Resources Inc → Eagle #1 Mine; 2018-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Metallurgical Resources Inc → Mammoth Coal Company; 2018-11-09 to current/open; source msha-controller-operator-history