# Relationship history for MSHA mine 2602711

Current hierarchy: **Kinterra Capitol Corporation → Southwest Critical Materials LLC → Pumpkin Hollow East Underground**

- 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

- **operator_operates_mine:** Nevada Copper Inc. → Pumpkin Hollow East Underground; 2012-03-15 to 2024-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Nevada Copper Corporation → Pumpkin Hollow East Underground; 2012-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nevada Copper Corporation → Nevada Copper Inc.; 2012-03-15 to 2024-10-08; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Critical Materials LLC → Pumpkin Hollow East Underground; 2024-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kinterra Capitol Corporation → Pumpkin Hollow East Underground; 2024-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kinterra Capitol Corporation → Southwest Critical Materials LLC; 2024-10-09 to current/open; source msha-controller-operator-history