HONOLULU (AP) - The University of Hawaii is announcing another delay for the results of an independent investigation into what caused a laboratory explosion that seriously injured a visiting researcher.
The university said Friday the investigation will be finished by the end of next month. The school had initially planned for it to be completed by the end of April but later pushed the plan back to mid-May.
The school says the investigation won't be finished until unspecified materials are tested for investigators from the University of California Center for Laboratory Safety.
The explosion in April caused a visiting researcher to lose an arm. She told fire department investigators the blast occurred after she turned off a digital pressure gauge she was using to check the pressure in a gas cylinder.