# Relationship history for MSHA mine 4608267

Current hierarchy: **El Paso Energy Corp → Anr Coal Company Llc → Mine No 11 South**

- 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:** Robert E  Murray → Mine No 11 South; 1992-02-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Oneida Coal Company Inc → Mine No 11 South; 1993-02-01 to 1996-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Murray → Oneida Coal Company Inc; 1993-02-01 to 1996-03-27; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → Mine No 11 South; 1993-12-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Anr Coal Company Llc → Mine No 11 South; 1996-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Anr Coal Company Llc; 1996-03-28 to current/open; source msha-controller-operator-history