E.i. Dupont De Nemours and Company

Frank T Bodurtha, Jr

Cristobal Bonifaz

An improved laboratory barricade for containment of potentially explosive materials and processes, having a containment chamber provided with a pressure venting port or ports, wherein the improvement comprises said barricade having dimensions such that ratio of total contained volume to total area of the pressure venting port or ports is between about 7620 cm (3000 in) and about 12,700 cm (5000 in), and the total area of the pressure venting port or ports is at least about 6.45 cm.sup.2 (1 in.sup.2) per 100 g TNT equivalent of the potentially explosive materials to be contained.

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Newark, DE, United States of America

Frank T Bodurtha, Jr