# Relationship history for MSHA mine 1516159

Current hierarchy: **Fairchild Darrel → Panbowl Energy Company → Panbowl #2**

- 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

- **operator_operates_mine:** Deecoal Company → Panbowl #2; 1987-09-01 to 1988-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Alexander Ted → Panbowl #2; 1987-09-01 to 1988-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Alexander Ted → Deecoal Company; 1987-09-01 to 1988-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Panbowl Energy Company → Panbowl #2; 1988-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fairchild Darrel → Panbowl #2; 1988-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fairchild Darrel → Panbowl Energy Company; 1988-08-10 to current/open; source msha-controller-operator-history