# Relationship history for MSHA mine 0505027

Current hierarchy: **Robert  Kennard; Anthony  Bruster → K&B Mining LLC → Badger a Group of Mines**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Epic Construction & Environmental Inc. → Badger a Group of Mines; 2014-04-23 to 2014-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Katherine  Lindroth-Gendron → Badger a Group of Mines; 2014-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Katherine  Lindroth-Gendron → Epic Construction & Environmental Inc.; 2014-04-23 to 2014-10-15; source msha-controller-operator-history
- **operator_operates_mine:** K&B Mining LLC → Badger a Group of Mines; 2014-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Kennard et al → Badger a Group of Mines; 2014-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Kennard et al → K&B Mining LLC; 2014-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Bruster et al → K&B Mining LLC; 2014-10-16 to current/open; source msha-controller-operator-history