# Relationship history for MSHA mine 1002303

Current hierarchy: **Elk Range Mining Pty Ltd → Elk Range Minerals, LLC → Orogrande Processing Facility**

- 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:** Endomines AB → Orogrande Processing Facility; 2018-04-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Endomines Idaho, LLC → Orogrande Processing Facility; 2018-11-15 to 2026-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Endomines AB → Endomines Idaho, LLC; 2018-11-15 to 2026-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Elk Range Minerals, LLC → Orogrande Processing Facility; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elk Range Mining Pty Ltd → Orogrande Processing Facility; 2026-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elk Range Mining Pty Ltd → Elk Range Minerals, LLC; 2026-03-12 to current/open; source msha-controller-operator-history