# Relationship history for MSHA mine 4104742

Current hierarchy: **Richard D  Smelley; Debbie R  Davis → Little Bear Aggregate → Little Bear Aggregate**

- 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:** Little Bear Aggregate → Little Bear Aggregate; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard D  Smelley et al → Little Bear Aggregate; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard D  Smelley et al → Little Bear Aggregate; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Debbie R  Davis et al → Little Bear Aggregate; 2008-07-08 to current/open; source msha-controller-operator-history