# Relationship history for MSHA mine 2902538

Current hierarchy: **Angie  Vasquez → Rio Pecos Materials LLC → Rio Pecos Materials Baymax pit**

- 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:** Rio Pecos Materials LLC → Rio Pecos Materials Baymax pit; 2021-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patricia  Balderrama et al → Rio Pecos Materials Baymax pit; 2021-10-25 to 2025-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Patricia  Balderrama et al → Rio Pecos Materials LLC; 2021-10-25 to 2025-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Angie  Vasquez et al → Rio Pecos Materials LLC; 2021-10-25 to 2025-09-22; source msha-controller-operator-history
- **controller_controls_mine:** Angie  Vasquez → Rio Pecos Materials Baymax pit; 2025-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Angie  Vasquez → Rio Pecos Materials LLC; 2025-09-23 to current/open; source msha-controller-operator-history