# Relationship history for MSHA mine 3302502

Current hierarchy: **Clum Merle A → Arapaho Mining Inc → Sun Valley 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

- **operator_operates_mine:** Reclamation & Air Survey Inc → Sun Valley Mine; 1971-11-01 to 1980-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Kohl Jerry K → Sun Valley Mine; 1971-11-01 to 1980-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Kohl Jerry K → Reclamation & Air Survey Inc; 1971-11-01 to 1980-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Arapaho Mining Inc → Sun Valley Mine; 1980-07-08 to 1986-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Kohl Etta L → Sun Valley Mine; 1980-07-08 to 1986-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Kohl Etta L → Arapaho Mining Inc; 1980-07-08 to 1986-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Arapaho Mining Inc → Sun Valley Mine; 1986-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clum Merle A → Sun Valley Mine; 1986-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clum Merle A → Arapaho Mining Inc; 1986-08-26 to current/open; source msha-controller-operator-history