# Relationship history for MSHA mine 4702631

Current hierarchy: **Harold E  Gensler; Steven L  Gensler → Badger Highways Company Inc → Brillion Pit & Mill**

- 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 L  Gensler  et al → Brillion Pit & Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Badger Highways Company Inc → Brillion Pit & Mill; 1979-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven L  Gensler  et al → Badger Highways Company Inc; 1979-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold E  Gensler  et al → Badger Highways Company Inc; 1979-08-01 to current/open; source msha-controller-operator-history