# Relationship history for MSHA mine 0201391

Current hierarchy: **BHP Billiton → Bhp Copper Inc → SAN MANUEL LIME & FLUX**

- 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:** Magma Copper Company → SAN MANUEL LIME & FLUX; 1950-01-01 to 1987-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Newmont Corporation → SAN MANUEL LIME & FLUX; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Newmont Corporation → Magma Copper Company; 1950-01-01 to 1987-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Magma Copper Company → SAN MANUEL LIME & FLUX; 1987-03-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Magma Copper Company → SAN MANUEL LIME & FLUX; 1987-03-30 to 1996-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Magma Copper Company → Magma Copper Company; 1987-03-30 to 1996-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Bhp Copper Inc → SAN MANUEL LIME & FLUX; 1996-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Broken Hill Proprietary Company Ltd → SAN MANUEL LIME & FLUX; 1996-02-22 to 2012-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Broken Hill Proprietary Company Ltd → Bhp Copper Inc; 1996-02-22 to 2012-08-22; source msha-controller-operator-history
- **controller_controls_mine:** BHP Billiton → SAN MANUEL LIME & FLUX; 2012-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BHP Billiton → Bhp Copper Inc; 2012-08-23 to current/open; source msha-controller-operator-history