# Relationship history for MSHA mine 1401822

Current hierarchy: **Greg  Stoppel etal; Tina  Stoppel etal → DC Aggregates, LLC → DC Aggregates, 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:** DC Aggregates, LLC → DC Aggregates, LLC; 2021-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Stoppel etal → DC Aggregates, LLC; 2021-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Stoppel etal → DC Aggregates, LLC; 2021-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tina  Stoppel etal → DC Aggregates, LLC; 2021-01-29 to current/open; source msha-controller-operator-history