# Relationship history for MSHA mine 4604789

Current hierarchy: **Alpha Natural Resources, Inc. → Eagle Energy Inc → Mine 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:** Bethlehem Steel Corp → Mine No 2; 1950-01-01 to 1996-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Nest Inc → Mine No 2; 1975-09-04 to 1996-08-30; source msha-controller-operator-history
- **controller_controls_operator:** Bethlehem Steel Corp → Eagle Nest Inc; 1975-09-04 to 1996-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Energy Inc → Mine No 2; 1996-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine No 2; 1996-08-31 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Eagle Energy Inc; 1996-08-31 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mine No 2; 2011-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Eagle Energy Inc; 2011-06-01 to current/open; source msha-controller-operator-history