# Relationship history for MSHA mine 1517605

Current hierarchy: **El Paso Energy Corp → Coastal Coal Company, LLC → Lynn Branch Mine No 1**

- 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:** El Paso Energy Corp → Lynn Branch Mine No 1; 1979-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald S  Ratliff → Lynn Branch Mine No 1; 1988-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → Lynn Branch Mine No 1; 1989-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary T  Rutherford → Lynn Branch Mine No 1; 1992-12-11 to 2000-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Iva Coal Inc → Lynn Branch Mine No 1; 1994-10-01 to 1996-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Gary T  Rutherford → Iva Coal Inc; 1994-10-01 to 1996-02-08; source msha-controller-operator-history
- **operator_operates_mine:** Enterprise Coal Company → Lynn Branch Mine No 1; 1996-02-09 to 1996-03-19; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Enterprise Coal Company; 1996-02-09 to 1996-03-19; source msha-controller-operator-history
- **operator_operates_mine:** R S Mining Inc → Lynn Branch Mine No 1; 1996-03-20 to 1997-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Ronald S  Ratliff → R S Mining Inc; 1996-03-20 to 1997-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company, LLC → Lynn Branch Mine No 1; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company, LLC; 1997-05-01 to current/open; source msha-controller-operator-history