# Relationship history for MSHA mine 4703661

Current hierarchy: **Joseph  Bauer; Steven  Bauer → Bindl-Bauer Limestone of Spring Green Inc → Plant 2**

- 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:** Steven  Bauer et al → Plant 2; 2009-11-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bindl-Bauer Limestone of Spring Green Inc → Plant 2; 2012-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Bauer et al → Bindl-Bauer Limestone of Spring Green Inc; 2012-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Bauer et al → Bindl-Bauer Limestone of Spring Green Inc; 2012-07-09 to current/open; source msha-controller-operator-history