# Relationship history for MSHA mine 0203392

Current hierarchy: **Bald Eagle Partners LLC → Eagle Pioneer Mine, LLC → Pioneer Group Mine**

- 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:** Mohave West → Pioneer Group Mine; 2017-12-27 to 2021-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Transwest Minerals LLC → Pioneer Group Mine; 2017-12-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Transwest Minerals LLC → Mohave West; 2017-12-27 to 2021-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Pioneer Mine, LLC → Pioneer Group Mine; 2021-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bald Eagle Partners LLC et al → Pioneer Group Mine; 2021-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bald Eagle Partners LLC et al → Eagle Pioneer Mine, LLC; 2021-08-01 to current/open; source msha-controller-operator-history