# Relationship history for MSHA mine 1519031

Current hierarchy: **Darrell  Wagner → Wilcoal Mining Incorporated → #3**

- 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:** Wilma  Wagner → #3; 2003-04-23 to 2011-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Wilcoal Mining Incorporated → #3; 2006-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilma  Wagner → Wilcoal Mining Incorporated; 2006-08-03 to 2011-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Darrell  Wagner → #3; 2011-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Wagner → Wilcoal Mining Incorporated; 2011-08-12 to current/open; source msha-controller-operator-history