# Relationship history for MSHA mine 2103735

Current hierarchy: **Tim L  Becken; Thorwald L  Becken → Cemstone Products Co. → Waite Park Pit 059**

- 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:** Hammond T Becken et al → Waite Park Pit 059; 1950-01-01 to 2025-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Cemstone Products Co. → Waite Park Pit 059; 2011-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hammond T Becken et al → Cemstone Products Co.; 2011-08-23 to 2025-08-17; source msha-controller-operator-history
- **controller_controls_operator:** Tim L Becken et al → Cemstone Products Co.; 2011-08-23 to 2025-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Thorwald L  Becken et al → Waite Park Pit 059; 2025-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thorwald L  Becken et al → Cemstone Products Co.; 2025-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim L  Becken et al → Cemstone Products Co.; 2025-08-18 to current/open; source msha-controller-operator-history