# Relationship history for MSHA mine 4607505

Current hierarchy: **Blankenship Paul → Paul'S Construction Inc → Bergoo Creek Strip**

- 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:** Westmoreland Coal Company → Bergoo Creek Strip; 1984-12-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elk River Sewell Coal Company → Bergoo Creek Strip; 1988-04-01 to 1988-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Westmoreland Coal Company → Elk River Sewell Coal Company; 1988-04-01 to 1988-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Paul'S Construction Inc → Bergoo Creek Strip; 1988-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Paul → Bergoo Creek Strip; 1988-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Paul → Paul'S Construction Inc; 1988-10-21 to current/open; source msha-controller-operator-history