Zirconium 3 : Chemistry and Chemical Disasters. A gray, ductile metallic element (Zr) used in thermonuclear reactors which is flammable and explosive if in powder or chip form
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}