# Relationship history for MSHA mine 2602481

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

- 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:** Newmont Corporation → Chukar; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald W  Guill → Chukar; 1988-04-01 to 2011-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Newmont USA Limited → Chukar; 2002-01-17 to 2008-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Newmont Corporation → Newmont USA Limited; 2002-01-17 to 2008-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Small Mine Development LLC → Chukar; 2008-06-01 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Guill → Small Mine Development LLC; 2008-06-01 to 2009-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Newmont USA Limited → Chukar; 2010-01-01 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Newmont Corporation → Newmont USA Limited; 2010-01-01 to 2019-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Jones → Chukar; 2011-01-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Jones → Small Mine Development LLC; 2011-01-28 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Newmont USA Limited et al → Chukar; 2019-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Gold Mines LLC → Chukar; 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
- **controller_controls_operator:** Barrick Nevada Holding LLC et al → Nevada Gold Mines LLC; 2019-07-23 to current/open; source msha-controller-operator-history