# Relationship history for MSHA mine 0202696

Current hierarchy: **Fort Mc Dowell Yavapai Nation → Fort Mc Dowell Yavapai Materials → Fort Mc Dowell Yavapai Materials-Plt #7**

- 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

- **controller_controls_mine:** Fort Mc Dowell Yavapai Nation → Fort Mc Dowell Yavapai Materials-Plt #7; 1984-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fort Mc Dowell Yavapai Materials → Fort Mc Dowell Yavapai Materials-Plt #7; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fort Mc Dowell Yavapai Nation → Fort Mc Dowell Yavapai Materials; 1997-07-01 to current/open; source msha-controller-operator-history