# Relationship history for MSHA mine 0102849

Current hierarchy: **Walter Energy Incorporated → Taft Coal Sales & Associates Inc → Wolf Creek**

- 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:** Taft Coal Sales & Associates Inc → Wolf Creek; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** A J  Taft → Wolf Creek; 1990-01-01 to 2008-09-03; source msha-controller-operator-history
- **controller_controls_operator:** A J  Taft → Taft Coal Sales & Associates Inc; 1990-01-01 to 2008-09-03; source msha-controller-operator-history
- **controller_controls_mine:** Walter Energy Incorporated → Wolf Creek; 2008-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter Energy Incorporated → Taft Coal Sales & Associates Inc; 2008-09-04 to current/open; source msha-controller-operator-history