# Relationship history for MSHA mine 2601836

Current hierarchy: **Westar Corp → Westar Corp → Spaulding Canyon Placer**

- 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:** Westar Corp → Spaulding Canyon Placer; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nevada Midas Mining Inc → Spaulding Canyon Placer; 1983-04-01 to 1985-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Bell Charles → Spaulding Canyon Placer; 1983-04-01 to 1985-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Bell Charles → Nevada Midas Mining Inc; 1983-04-01 to 1985-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Magna Mining Inc → Spaulding Canyon Placer; 1985-02-01 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Feikes Harold-William Cavin Et Al → Spaulding Canyon Placer; 1985-02-01 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Feikes Harold-William Cavin Et Al → Magna Mining Inc; 1985-02-01 to 1985-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Westar Corp → Spaulding Canyon Placer; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Westar Corp → Westar Corp; 1985-10-01 to current/open; source msha-controller-operator-history