# Relationship history for MSHA mine 4104145

Current hierarchy: **Gerardo  Quinonez → Quinonez Trucking Company → QUINONEZ DIMENSION 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

- **controller_controls_mine:** Gerardo  Quinonez → QUINONEZ DIMENSION PIT; 1992-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quinonez Trucking Company → QUINONEZ DIMENSION PIT; 2000-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerardo  Quinonez → Quinonez Trucking Company; 2000-03-01 to current/open; source msha-controller-operator-history