# Relationship history for MSHA mine 4202665

Current hierarchy: **Jeffrey  Wright → South Valley Rock Products, LLC → Portable 2**

- 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:** South Valley Rock Products, LLC → Portable 2; 2017-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey  Wright → Portable 2; 2017-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Wright → South Valley Rock Products, LLC; 2017-04-04 to current/open; source msha-controller-operator-history