Importance

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Abstract

A system for use with a gunite rig to capture airborne gunite type materials, particularly those containing silica, during the preparation of the gunite. In one respect, as the bags of silica-containing material are placed in the mixing section of the gunite rig and ripped open, airborne gunite dust is captured by a hood, separation, and suction system positioned above the mixer. The mitigation system also includes a plenum box and suction system positioned adjacent the mouth of a gunite pot to capture gunite dust generated as the mixed gunite material falls from a hopper into the gunite pot. A separator positioned upstream of a dust collection apparatus separates the larger heavier particles from the lighter ones.

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First Claim