# Relationship history for MSHA mine 4702809

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

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Bindl Limestone Products Inc → Bauers Plant; 1985-09-01 to 2009-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Bindl → Bauers Plant; 1985-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Bindl → Bindl Limestone Products Inc; 1985-09-01 to 2009-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Bindl Bauer Limestone of Spring Green Inc → Bauers Plant; 2009-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steven  Bauer et al → Bauers Plant; 2009-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Bauer et al → Bindl Bauer Limestone of Spring Green Inc; 2009-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Bauer et al → Bindl Bauer Limestone of Spring Green Inc; 2009-11-09 to current/open; source msha-controller-operator-history