# Relationship history for MSHA mine 0202648

Current hierarchy: **Robert L  Knox; Gordon  Reed → K & R GOLD LLC → Blue Jay 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:** Sahuarita Mining 1986 Inc → Blue Jay Mine; 1995-07-01 to 2007-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Knox Robert L & Sahuarita Management Corp → Blue Jay Mine; 1995-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Knox Robert L & Sahuarita Management Corp → Sahuarita Mining 1986 Inc; 1995-07-01 to 2007-09-10; source msha-controller-operator-history
- **operator_operates_mine:** K & R GOLD LLC → Blue Jay Mine; 2007-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert L  Knox et al → Blue Jay Mine; 2007-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert L  Knox et al → K & R GOLD LLC; 2007-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gordon  Reed et al → K & R GOLD LLC; 2007-09-11 to current/open; source msha-controller-operator-history