# Relationship history for MSHA mine 2601942

Current hierarchy: **Barrick Nevada Holding LLC; Newmont USA Limited → Nevada Gold Mines LLC → Twin Creeks 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Newmont Corporation → Twin Creeks Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Consolidated Gold Fields Limited → Twin Creeks Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gold Fields Operating Company → Twin Creeks Mine; 1985-11-01 to 1989-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Gold Fields Limited → Gold Fields Operating Company; 1985-11-01 to 1989-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Santa Fe Pacific Corp → Twin Creeks Mine; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Twin Creeks Mine; 1989-08-09 to 1995-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Gold Fields Operating Company → Twin Creeks Mine; 1989-08-10 to 1993-06-24; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Gold Fields Operating Company; 1989-08-10 to 1993-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Santa Fe Pacific Gold Corp → Twin Creeks Mine; 1993-06-25 to 1997-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Santa Fe Pacific Corp → Santa Fe Pacific Gold Corp; 1993-06-25 to 1997-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Newmont USA Limited → Twin Creeks Mine; 1997-05-05 to 2019-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Newmont Corporation → Newmont USA Limited; 1997-05-05 to 2019-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Newmont USA Limited et al → Twin Creeks Mine; 2019-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Gold Mines LLC → Twin Creeks Mine; 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
- **controller_controls_operator:** Barrick Nevada Holding LLC et al → Nevada Gold Mines LLC; 2019-07-29 to current/open; source msha-controller-operator-history