# Relationship history for MSHA mine 0404957

Current hierarchy: **Marval Paul Sr-Jesse Martinez → Master Sand Materials → Indio Hills Aggregate**

- 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

- **controller_controls_mine:** Marval Paul Sr-Jesse Martinez Et Al → Indio Hills Aggregate; 1985-11-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Master Sand Materials → Indio Hills Aggregate; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marval Paul Sr-Jesse Martinez Et Al → Master Sand Materials; 1988-06-01 to current/open; source msha-controller-operator-history