# Relationship history for MSHA mine 2003598

Current hierarchy: **Mark E  Feichtenbiner → B&M Seed → B&M Seed**

- 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:** Mark E  Feichtenbiner → B&M Seed; 2017-09-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B&M Seed → B&M Seed; 2020-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark E  Feichtenbiner → B&M Seed; 2020-07-09 to current/open; source msha-controller-operator-history