# Relationship history for MSHA mine 4104638

Current hierarchy: **John G  Rountree → Rountree Gravel Company LP → Rountree Gravel Co., LP**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Rountree Gravel Company LP → Rountree Gravel Co., LP; 2006-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John G  Rountree → Rountree Gravel Co., LP; 2006-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John G  Rountree → Rountree Gravel Company LP; 2006-12-20 to current/open; source msha-controller-operator-history