Engineering, ingenuity control conveyor dust

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      <subfield code="a">Exhaust hood at the source keeps work area clean, cuts operating costs, and keeps air breathable. Conveyors, bagging, loadout, charging, and discharging unit operations are the worst villains from a dust control standpoint</subfield>
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      <subfield code="g">Vol. 116, nº 6, December 1977 ; p. 68-69</subfield>
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