# Relationship history for MSHA mine 0404918

Current hierarchy: **Equinox Gold Corp → Castle Mountain Venture → Castle Mountain 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:** Castle Mountain Venture → Castle Mountain Mine; 1988-01-01 to 2017-10-24; source msha-controller-operator-history
- **controller_controls_mine:** MK Resources Co et al → Castle Mountain Mine; 1988-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MK Resources Co et al → Castle Mountain Venture; 1988-01-01 to 2017-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Viceroy Gold Corp  et al → Castle Mountain Venture; 1988-01-01 to 2017-10-24; source msha-controller-operator-history
- **operator_operates_mine:** Castle Mountain Venture → Castle Mountain Mine; 2017-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Equinox Gold Corp → Castle Mountain Mine; 2017-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Equinox Gold Corp → Castle Mountain Venture; 2017-10-25 to current/open; source msha-controller-operator-history