# Relationship history for MSHA mine 4607562

Current hierarchy: **Edward A  Asbury → Double Take Mining Company Inc → 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

- **operator_operates_mine:** Wp Coal Inc → Mine No 1; 1988-08-01 to 1990-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Ruth  Prater  et al → Mine No 1; 1988-08-01 to 1990-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Ruth  Prater  et al → Wp Coal Inc; 1988-08-01 to 1990-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Double Take Mining Company Inc → Mine No 1; 1990-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward A  Asbury → Mine No 1; 1990-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward A  Asbury → Double Take Mining Company Inc; 1990-02-05 to current/open; source msha-controller-operator-history