# Relationship history for MSHA mine 4105642

Current hierarchy: **John D  Loepky → BASE N ROCKZ, LLC → TAN CONE**

- 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

- **controller_controls_mine:** John D  Loepky → TAN CONE; 2018-07-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BASE N ROCKZ, LLC → TAN CONE; 2022-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D  Loepky → BASE N ROCKZ, LLC; 2022-09-20 to current/open; source msha-controller-operator-history