# Relationship history for MSHA mine 0200152

Current hierarchy: **RTZ Corp  PLC; BHP Billiton PLC → Resolution Copper Mining LLC → Resolution 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:** Magma Copper Company → Resolution Mine; 1950-01-01 to 1987-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Newmont Corporation → Resolution Mine; 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 → Resolution Mine; 1987-03-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Magma Copper Company → Resolution Mine; 1987-03-30 to 1996-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Magma Copper Company → Magma Copper Company; 1987-03-30 to 1996-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Broken Hill Proprietary Company Ltd → Resolution Mine; 1996-02-22 to 2012-08-22; source msha-controller-operator-history
- **operator_operates_mine:** BHP Copper Inc → Resolution Mine; 1996-06-30 to 2004-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Broken Hill Proprietary Company Ltd → BHP Copper Inc; 1996-06-30 to 2004-05-02; source msha-controller-operator-history
- **operator_operates_mine:** Resolution Copper Mining LLC → Resolution Mine; 2004-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** RTZ Corp  PLC et al → Resolution Mine; 2004-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RTZ Corp  PLC et al → Resolution Copper Mining LLC; 2004-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BHP Billiton PLC  et al → Resolution Copper Mining LLC; 2004-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** BHP Billiton → Resolution Mine; 2012-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BHP Billiton → BHP Copper Inc; 2012-08-23 to 2004-05-02; source msha-controller-operator-history