Backdraft Dampers. Backdraft Damper Training Application Backdraft dampers allow air to flow in one direction only and prevent unwanted (hot/cold outside.
LIFTING AND MOVING HEAVY OBJECTS. Introduction Rescue personnel often think that the physical laws of the universe do not apply when there is "an emergency.“
The Dinosaurs of Jurassic Park. Velociraptor Bipedal, feathered carnivore 6-7 feet long; 2 feet tall 15-35 lbs. Lived in Cretaceous.
