# Relationship history for MSHA mine 4606339

Current hierarchy: **Crabtree David A → Kelly Mountain Kohls Inc → Kelly Mountain No 1**

- 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:** Kelly Mountain Kohls Inc → Kelly Mountain No 1; 1981-06-01 to 1981-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Winters Abigail → Kelly Mountain No 1; 1981-06-01 to 1981-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Winters Abigail → Kelly Mountain Kohls Inc; 1981-06-01 to 1981-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Kelly Mountain Kohls Inc → Kelly Mountain No 1; 1981-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Crabtree David A → Kelly Mountain No 1; 1981-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Crabtree David A → Kelly Mountain Kohls Inc; 1981-09-09 to current/open; source msha-controller-operator-history