# Relationship history for MSHA mine 0301699

Current hierarchy: **Robert C  Kuhn → Forgotten Aye Mines → Sweet Surrender #6**

- 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:** Forgotten Aye Mines → Sweet Surrender #6; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert C  Kuhn → Sweet Surrender #6; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert C  Kuhn → Forgotten Aye Mines; 1990-01-01 to current/open; source msha-controller-operator-history