# Relationship history for MSHA mine 0404662

Current hierarchy: **Black John-Steve Radvak → Weaco Resources Ltd → Bonanza King 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:** Dollar Resources → Bonanza King Mine; 1983-08-01 to 1983-11-10; source msha-controller-operator-history
- **controller_controls_mine:** White Jerry → Bonanza King Mine; 1983-08-01 to 1983-11-10; source msha-controller-operator-history
- **controller_controls_operator:** White Jerry → Dollar Resources; 1983-08-01 to 1983-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Weaco Resources Ltd → Bonanza King Mine; 1983-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Black John-Steve Radvak Et Al → Bonanza King Mine; 1983-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Black John-Steve Radvak Et Al → Weaco Resources Ltd; 1983-11-11 to current/open; source msha-controller-operator-history