A housing supervisor at the Via Christi Regional Medical Center-St. Francis Campus says the man is in serious condition Monday night. His name was not immediately released.
The fire reportedly started around 1:15 p.m. Monday on the assembly line where propane tanks are filled.
Fire officials say the fire did not spread beyond the area where the initial flash happened.
The Wichita-based camping and equipment maker has canceled its second and third shifts at the plant.
The cause of the explosion is under investigation.
(Copyright 2009 by The Associated Press. All Rights Reserved.)