# Relationship history for MSHA mine 2003699

Current hierarchy: **Sean  Brooms → Dairyland Excavating L.L.C. → D-1**

- 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:** Dairyland Excavating L.L.C. → D-1; 2026-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sean  Brooms → D-1; 2026-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sean  Brooms → Dairyland Excavating L.L.C.; 2026-03-23 to current/open; source msha-controller-operator-history