# Relationship history for MSHA mine 0404361

Current hierarchy: **Yuba Natural Resources Inc → Yuba Natural Resources Inc → Retort & Gold Circuit**

- 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:** Yuba River Ores → Retort & Gold Circuit; 1979-11-01 to 1983-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Yuba Natural Resources Inc-Lamon Construction Et A → Retort & Gold Circuit; 1979-11-01 to 1983-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Yuba Natural Resources Inc-Lamon Construction Et A → Yuba River Ores; 1979-11-01 to 1983-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Yuba Natural Resources Inc → Retort & Gold Circuit; 1983-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Yuba Natural Resources Inc → Retort & Gold Circuit; 1983-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yuba Natural Resources Inc → Yuba Natural Resources Inc; 1983-06-15 to current/open; source msha-controller-operator-history