# Relationship history for MSHA mine 1518306

Current hierarchy: **Alpha Natural Resources Holdings, Inc → Enterprise Mining Company, L. L. C. → Mine #5**

- 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:** El Paso Energy Corp → Mine #5; 1989-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company, L.L.C. → Mine #5; 2000-01-01 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company, L.L.C.; 2000-01-01 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Amfire LLC → Mine #5; 2003-01-31 to 2003-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Enterprise Mining Company, L. L. C. → Mine #5; 2003-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mine #5; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Enterprise Mining Company, L. L. C.; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Amfire LLC → Enterprise Mining Company, L. L. C.; 2003-02-01 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Mine #5; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Enterprise Mining Company, L. L. C.; 2016-07-26 to current/open; source msha-controller-operator-history