Selected components of debris from the explosion were subjected to nuclear, chemical, physical, and materials analyses to determine potential causes of, or contributing factors to, the explosion. Results of nuclear studies showed no evidence for signature species indicative of orthodox nuclear events. Inorganic and particulate analyses were also negative with respect to residues of unexpected chemical species. Materials characterization revealed the type of stainless steel used in the manufacture of the electrolytic cell as one relatively high in Mo concentration. The gas chromatography-mass spectrometry analyses of trace organic compounds indicated the presence of an organic oil in the interior of the electrochemical cell. It is possible that oxidation of organic oil contributed to the total energy inventory and initiation of the explosion. 8 figures and 23 references