# Relationship history for MSHA mine 1000089

Current hierarchy: **The Electrum Group LLC → Silver Opportunity Partners LLC → Sunshine 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Sunshine Precious Metals Inc → Sunshine Mine; 1950-01-01 to 2003-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Sunshine Mining & Refining Company → Sunshine Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunshine Mining & Refining Company → Sunshine Precious Metals Inc; 1950-01-01 to 2003-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Sterling Mining Company → Sunshine Mine; 2003-10-01 to 2010-05-26; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth  Rux et al → Sunshine Mine; 2003-10-01 to 2009-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Rux et al → Sterling Mining Company; 2003-10-01 to 2009-08-18; source msha-controller-operator-history
- **controller_controls_operator:** J K  Berscht et al → Sterling Mining Company; 2003-10-01 to 2009-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Roger Van  Voorhees et al → Sunshine Mine; 2009-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger Van  Voorhees et al → Sterling Mining Company; 2009-08-19 to 2010-05-26; source msha-controller-operator-history
- **operator_operates_mine:** Silver Opportunity Partners → Sunshine Mine; 2010-05-27 to 2011-09-27; source msha-controller-operator-history
- **controller_controls_mine:** Precious Metals Opportunities LLC et al → Sunshine Mine; 2010-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Precious Metals Opportunities LLC et al → Silver Opportunity Partners; 2010-05-27 to 2011-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Silver Opportunity Partners LLC → Sunshine Mine; 2011-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sunshine Silver Mines Corp → Sunshine Mine; 2011-09-28 to 2020-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Sunshine Silver Mines Corp → Silver Opportunity Partners LLC; 2011-09-28 to 2020-10-29; source msha-controller-operator-history
- **controller_controls_mine:** The Electrum Group LLC → Sunshine Mine; 2020-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Electrum Group LLC → Silver Opportunity Partners LLC; 2020-10-30 to current/open; source msha-controller-operator-history