# Relationship history for MSHA mine 3800672

Current hierarchy: **White Oak Group Inc → Superior Sand LLC → Superior Sand LLC**

- 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:** Black Creek Mining Company → Superior Sand LLC; 1994-11-01 to 2000-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Rhette D  Stanley → Superior Sand LLC; 1994-11-01 to 2000-07-18; source msha-controller-operator-history
- **controller_controls_operator:** Rhette D  Stanley → Black Creek Mining Company; 1994-11-01 to 2000-07-18; source msha-controller-operator-history
- **operator_operates_mine:** Superior Sand LLC → Superior Sand LLC; 2000-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** White Oak Group Inc → Superior Sand LLC; 2000-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** White Oak Group Inc → Superior Sand LLC; 2000-07-19 to current/open; source msha-controller-operator-history