# Relationship history for MSHA mine 2601089

Current hierarchy: **Barrick Nevada Holding LLC; Newmont USA Limited → Nevada Gold Mines LLC → Goldstrike 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:** Pancana Industries → Goldstrike Mine; 1950-01-01 to 1978-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Pancana Industries → Goldstrike Mine; 1950-01-01 to 1978-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Pancana Industries → Pancana Industries; 1950-01-01 to 1978-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Western States Minerals Corp → Goldstrike Mine; 1978-08-01 to 1986-12-30; source msha-controller-operator-history
- **controller_controls_mine:** S J Groves & Sons Company → Goldstrike Mine; 1978-08-01 to 1990-01-07; source msha-controller-operator-history
- **controller_controls_operator:** S J Groves & Sons Company → Western States Minerals Corp; 1978-08-01 to 1986-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Barrick Goldstrike Mines Inc → Goldstrike Mine; 1986-12-31 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Barrick Gold Corp → Goldstrike Mine; 1986-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Gold Corp → Barrick Goldstrike Mines Inc; 1986-12-31 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Barrick Nevada Holding LLC et al → Goldstrike Mine; 2019-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Gold Mines LLC → Goldstrike Mine; 2019-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Nevada Holding LLC et al → Nevada Gold Mines LLC; 2019-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Newmont USA Limited et al → Nevada Gold Mines LLC; 2019-07-23 to current/open; source msha-controller-operator-history