# Relationship history for MSHA mine 3003711

Current hierarchy: **Annette  Sanita → Annette Sanita → Mine # 1**

- 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:** Maplewood Natural Stone → Mine # 1; 2009-09-02 to 2013-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Schuurman → Mine # 1; 2009-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Schuurman → Maplewood Natural Stone; 2009-09-02 to 2013-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Katrina Stanton → Mine # 1; 2013-10-01 to 2015-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Katrina  Stanton → Mine # 1; 2013-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Katrina  Stanton → Katrina Stanton; 2013-10-01 to 2015-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Annette Sanita → Mine # 1; 2015-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Annette  Sanita → Mine # 1; 2015-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Annette  Sanita → Annette Sanita; 2015-05-31 to current/open; source msha-controller-operator-history