# Relationship history for MSHA mine 3601349

Current hierarchy: **Thomas  Kraynak → Kraynak Coal Company → Kraynak No 3**

- 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:** Kraynak Coal Company → Kraynak No 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  Kraynak et al → Kraynak No 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Kraynak et al → Kraynak Coal Company; 1950-01-01 to current/open; source msha-controller-operator-history