# Relationship history for MSHA mine 4608059

Current hierarchy: **El Paso Energy Corp → Coastal Coal-West Virginia Llc → Sugar Tree Surface**

- 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 → Sugar Tree Surface; 1979-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Crawford Reclamation & Surface Mining Inc → Sugar Tree Surface; 1991-07-01 to 1992-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Crawford Lewis C Jr → Sugar Tree Surface; 1991-07-01 to 1992-03-10; source msha-controller-operator-history
- **controller_controls_operator:** Crawford Lewis C Jr → Crawford Reclamation & Surface Mining Inc; 1991-07-01 to 1992-03-10; source msha-controller-operator-history
- **operator_operates_mine:** Acr Service Corp → Sugar Tree Surface; 1992-03-11 to 1993-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Dennis R → Sugar Tree Surface; 1992-03-11 to 1993-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Dennis R → Acr Service Corp; 1992-03-11 to 1993-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Coal Rush Mining Inc → Sugar Tree Surface; 1993-11-03 to 1997-02-05; source msha-controller-operator-history
- **controller_controls_mine:** Gary Wayne  Johnson → Sugar Tree Surface; 1993-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary Wayne  Johnson → Coal Rush Mining Inc; 1993-11-03 to 1997-02-05; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal-West Virginia Llc → Sugar Tree Surface; 1997-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal-West Virginia Llc; 1997-02-06 to current/open; source msha-controller-operator-history