# Relationship history for MSHA mine 0901217

Current hierarchy: **Christopher Daniel Schildt → Southeast River Sand, LLC → Southeast River 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:** Southeast River Sand, LLC → Southeast River Sand LLC; 2012-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan B  Schildt → Southeast River Sand LLC; 2012-04-10 to 2022-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Dan B  Schildt → Southeast River Sand, LLC; 2012-04-10 to 2022-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Christopher Daniel Schildt → Southeast River Sand LLC; 2022-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher Daniel Schildt → Southeast River Sand, LLC; 2022-03-09 to current/open; source msha-controller-operator-history