# Relationship history for MSHA mine 3901671

Current hierarchy: **Kristie  Wagner; Basil  Wagner → Wagner Reclamation Services → Kleemann**

- 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:** Wagner Reclamation Services → Kleemann; 2022-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kristie  Wagner et al → Kleemann; 2022-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kristie  Wagner et al → Wagner Reclamation Services; 2022-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Basil  Wagner et al → Wagner Reclamation Services; 2022-10-05 to current/open; source msha-controller-operator-history