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nb. | REPORT ) a. . of the a} aa ail a sy Le LABORATORY <a > FEDERAL BUREAU OF INVESTIGATION WASHINGTON, D. C. 7oFBI, Birminghan . _ Dates = = October 1, 1963 ; FBI File No. . ; ReVNSUBS, EXPLOSION AT 1601 CENTER Lab. No. = PCm77373 GH JV CW Id STREET, S,, BIRMINGHAM, ALA,, D-432066 JD 9/25/63 . BM Specimens received 9/26/63 Ql + Q4 Four boxes containing metal fragments and miscellaneous debris Q5 Washer from 618 Center Street QG Paper material from suspected area of first explosion Q7 Steel pin and spring ae Q8 Nail, nut and bolt Q9 Material from Veal residence Q10 Portion of can Q11L Material from utility pole Ql2 Material from crater Q13 Niscellaneous pieces of metal recovered by police department Q14 Material from Nunn residence G15 Pieces of utility pole Q16 Large bag of miscellaneous metal pieces Q17 Piece of coat hanger t Results of examinetion: The debris removed from some of the flat metal fragments of specimen @16 was found to consist essentially of sodium nitrate and a conplex mixture of sodium, sulphur and carbonate compounds, These deposits are consistent with and typical of those remaining aiter the detonation of a dynamite which originally contained Siznificant percentages of sodium nitrate and sulphur. Black powder consisting essentially of sodium nitrate and sulphur will also leave similar deposits. The on-the-scene high-order explosive effects observed in this case would eliminate a low-order explosion as would result from the deflagration of black powder, Among the metal fragments submitted were a variety of nails, screws, bolts, steel wire, hinge fragments, pipe fragments, et cetera. These metal fragments were subjected to explosive violence and were most likely packed around the explosive to serve as shrapnel. These miscellaneous metal pieces are like those from Pace l (continued on next page)