# Relationship history for MSHA mine 1511561

Current hierarchy: **Poole Wade H Iii → Red Gorge Coal & Coke Corp → #1 Prep 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Wolfcoal Partnership → #1 Prep Plant; 1978-08-01 to 1981-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Hart Homer O Et Al → #1 Prep Plant; 1978-08-01 to 1981-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Hart Homer O Et Al → Wolfcoal Partnership; 1978-08-01 to 1981-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Red Gorge Coal & Coke Corp → #1 Prep Plant; 1981-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Poole Wade H Iii → #1 Prep Plant; 1981-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Poole Wade H Iii → Red Gorge Coal & Coke Corp; 1981-07-28 to current/open; source msha-controller-operator-history