# Relationship history for MSHA mine 3901674

Current hierarchy: **Josh  Viet → Viet Family Inc → Freidel 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Viet Family Inc → Freidel Pit; 2023-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Josh  Viet → Freidel Pit; 2023-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Josh  Viet → Viet Family Inc; 2023-08-04 to current/open; source msha-controller-operator-history