REFERENCES

AIC Bulletin, vol. 14, no. 2, pp. 115–122.

Hardware cloth is a heavy, open-weave wire screen and is available at many hardware stores or lumber supply houses.

Honeycomb panels are available from Hexcel Corporation, P.O. Box 709, Bel Aire, Maryland 21014.

Pullman model JB-102 industrial vacuum cleaner. Pullman/Holt Products, Division of Purex Corp., 123 Medford Street, Malden, Mass. 02148. Clarke model 612 vacuum cleaner. Clarke-Gravely Corp., 2800 Estes Street, Muskegon, Mich. 49441.

For the address of the nearest distributor of flexible rubber sheeting write Hygenic Rubber Products, 1245 Home Avenue, Akron, Ohio 44310.

Lamb Electric two-stage by-pass universal vacuum motor with tangential discharge, model no. 115334, available from W.W. Grainger, Inc., stock no. 2M174. Branches of W.W. Grainger are located in many cities.