# Relationship history for MSHA mine 4201714

Current hierarchy: **Harrison Pete → South Fork Mining Company → Viva Mine**

- 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:** Harrison Pete → Viva Mine; 1980-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Fork Mining Company → Viva Mine; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harrison Pete → South Fork Mining Company; 1981-01-01 to current/open; source msha-controller-operator-history