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In page Mezzanine:
"Dual-gate safety systems were created to secure these areas, allowing a barrier to be in place at all times, even while pallets are being loaded or removed. Dual-gate systems create a completely enclosed workstation providing protection for the worker during loading and off-loading operations. When the rear-side gate opens, the ledge gate automatically closes, ensuring there is always a gate between the operator and the ledge.
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