# Relationship history for MSHA mine 1519966

Current hierarchy: **Michael  Day → DirtWorx Mining LLC → Auger #38**

- 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:** Michael  Day → Auger #38; 2023-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** DirtWorx Mining LLC → Auger #38; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Day → DirtWorx Mining LLC; 2024-07-08 to current/open; source msha-controller-operator-history