# Relationship history for MSHA mine 2602286

Current hierarchy: **Barrick Nevada Holding LLC; Newmont USA Limited → Nevada Gold Mines LLC → Turquoise Ridge**

- 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:** First Mississippi Corp → Turquoise Ridge; 1983-07-07 to 1996-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Firstmiss Gold Inc → Turquoise Ridge; 1996-01-01 to 1996-06-30; source msha-controller-operator-history
- **controller_controls_operator:** First Mississippi Corp → Firstmiss Gold Inc; 1996-01-01 to 1996-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Getchell Gold Corp → Turquoise Ridge; 1996-07-01 to 1999-05-27; source msha-controller-operator-history
- **controller_controls_mine:** Getchell Gold Corp → Turquoise Ridge; 1996-07-01 to 1999-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Getchell Gold Corp → Getchell Gold Corp; 1996-07-01 to 1999-05-27; source msha-controller-operator-history
- **operator_operates_mine:** Barrick Turquoise Ridge, Inc. → Turquoise Ridge; 1999-05-28 to 2019-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Placer Dome Ltd → Turquoise Ridge; 1999-05-28 to 2006-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Placer Dome Ltd → Barrick Turquoise Ridge, Inc.; 1999-05-28 to 2006-06-08; source msha-controller-operator-history
- **controller_controls_mine:** Barrick Gold Corp → Turquoise Ridge; 2006-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Gold Corp → Barrick Turquoise Ridge, Inc.; 2006-06-09 to 2019-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Barrick Nevada Holding LLC et al → Turquoise Ridge; 2019-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Gold Mines LLC → Turquoise Ridge; 2019-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Nevada Holding LLC et al → Nevada Gold Mines LLC; 2019-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Newmont USA Limited et al → Nevada Gold Mines LLC; 2019-07-29 to current/open; source msha-controller-operator-history