Dust explosion at Nestlé Purina plant in Arizona injures four
15 September 2014
Four contractors carrying out welding work in a grain elevator at a Nestlé Purina plant in Flagstaff, Arizona, ignited grain dust which triggered a blast on September 15, the Arizona Republic reported. The explosion blew out a metal door and caused a brief fire, as well as injuring the four contractors. Two have severe burns, a City Fire Department spokesman said.
Grain dust is a by-product of the grain handling and milling process, is highly combustible and can burn or explode if enough becomes airborne or accumulates on a surface and is exposed to an ignition source.
According to the Nestlé Purina website, the Flagstaff plant employs about 250 workers and produces 1,000 tons of dry dog and cat food a day.