I AM not that inform but could this be related
Blast kills researcher at ATK Thiokol lab
BRIGHAM CITY - Firefighters responding to an explosion in an ATK Thiokol research laboratory pulled a badly injured woman from the wrecked and burning building but could not save her co-worker, who perished in the blaze.
Steve Watters was the first Thiokol employee to die in an on-the-job accident since 1987, when nearly 100,000 pounds of rocket propellant ignited, killing five men.
No propellant was being used or stored in the building involved in Monday night's blast, on the north end of the 20,000-acre facility, about 25 miles northwest of Brigham City.
http://www.sltrib.com/portlet/article/html/fragments/print_article.jsp?article=2569853
Sounds like a horrible accident, but who knows?