# Relationship history for MSHA mine 4104435

Current hierarchy: **Donna S Landers; Marshall D Landers → D & M Inc → D & M Pit**

- 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:** D & M Inc → D & M Pit; 2003-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donna S Landers  et al → D & M Pit; 2003-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donna S Landers  et al → D & M Inc; 2003-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marshall D Landers  et al → D & M Inc; 2003-08-17 to current/open; source msha-controller-operator-history