# Relationship history for MSHA mine 0404429

Current hierarchy: **Yuba Natural Resources Inc-Lamon Construction Et A → Yuba-Lowe Venture → Yuba-Lowe Venture**

- 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:** Yuba-Lowe Venture → Yuba-Lowe Venture; 1980-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Yuba Natural Resources Inc-Lamon Construction Et A → Yuba-Lowe Venture; 1980-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yuba Natural Resources Inc-Lamon Construction Et A → Yuba-Lowe Venture; 1980-06-01 to current/open; source msha-controller-operator-history