# Relationship history for MSHA mine 1518627

Current hierarchy: **Alpha Natural Resources Holdings, Inc → Martin County Coal → Emily Creek Energy**

- 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 → Emily Creek Energy; 1975-05-28 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Emily Creek Energy; 1984-10-04 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Kirk et al → Emily Creek Energy; 2000-05-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Marshall Mining Incorporated → Emily Creek Energy; 2003-04-07 to 2005-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Kirk et al → Marshall Mining Incorporated; 2003-04-07 to 2005-01-18; source msha-controller-operator-history
- **operator_operates_mine:** Sidney Coal Company Inc. → Emily Creek Energy; 2005-01-19 to 2005-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Sidney Coal Company Inc.; 2005-01-19 to 2005-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Martin County Coal → Emily Creek Energy; 2005-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Martin County Coal; 2005-07-26 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Emily Creek Energy; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Sidney Coal Company Inc.; 2011-06-01 to 2005-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Martin County Coal; 2011-06-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Emily Creek Energy; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Sidney Coal Company Inc.; 2016-07-26 to 2005-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Martin County Coal; 2016-07-26 to current/open; source msha-controller-operator-history