# Relationship history for MSHA mine 4201547

Current hierarchy: **Krabbe Rollie → Rollie Krabbe Mining → B-1 Gonaway Or Gonaway**

- 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

- **controller_controls_mine:** Butt Jim C → B-1 Gonaway Or Gonaway; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Butt Mining Company → B-1 Gonaway Or Gonaway; 1979-01-01 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Butt Jim C → Butt Mining Company; 1979-01-01 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Krabbe Rollie → B-1 Gonaway Or Gonaway; 1979-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rollie Krabbe Mining → B-1 Gonaway Or Gonaway; 1981-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Krabbe Rollie → Rollie Krabbe Mining; 1981-12-15 to current/open; source msha-controller-operator-history