On Jan. 7, 2010, Texas Tech University (TTU) graduate student Preston Brown was working with another graduate student to synthesize and characterize
an energetic material, most likely nickel hydrazine perchlorate. Despite being told by their adviser, chemistry professor Louisa J. Hope-Weeks, to
make no more than 100 mg of the material, the students synthesized 10 g.
They then divided up the product: Brown took half to prepare the sample to run characterization tests, and the other student took half for solubility
studies. Because the product was lumpy, Brown placed his portion into a mortar. He believed that the compound was safe when “wet,” so he added
some hexane and—wearing safety goggles but working at a bench in the middle of the lab, with no blast shield—“very gently, very, very gently”
used a pestle to try to break up the chunks, Brown told TTU environmental health and safety (EH&S) officers, according to an interview transcript.
When Brown thought he was done, he set down the mortar and took off his goggles. Then he decided to give the compound one last stir. The mortar
exploded in Brown’s hands. Brown “lost three digits on his left hand, severely lacerated his right hand, perforated his left eye, scratched his
right eye and had superficial cuts to the parts of his body that were exposed,” says an investigation report prepared by Randy Nix, TTU’s EH&S
director. The other student was not injured.
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