# Relationship history for MSHA mine 2104108

Current hierarchy: **Garth  Tretter → Tretter Trucking LLC → TRETTER PIT SP**

- 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:** Tretter Trucking LLC → TRETTER PIT SP; 2025-07-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Garth  Tretter → TRETTER PIT SP; 2025-07-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Garth  Tretter → Tretter Trucking LLC; 2025-07-21 to current/open; source msha-controller-operator-history