# Relationship history for MSHA mine 4608797

Current hierarchy: **Pittston Company → Vandalia Resources Inc → Campbell'S Creek Plant**

- 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:** Pittston Company → Campbell'S Creek Plant; 1994-01-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vandalia Resources Inc → Campbell'S Creek Plant; 1999-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Vandalia Resources Inc; 1999-09-01 to current/open; source msha-controller-operator-history