Originally designed as a bison slaughter plant in Calgary, Canada, this design has been adapted for beef slaughter in the US and, South America. This simple plan with a drive thru stock trailer unloading area, has three areas to hold animals before slaughter. In very small plants, it’s important to keep animals from different locations separate. Bison should also be handled one at a time from the pens to the knock box. Making bison stand too long in new places causes them to panic and jump the fence. Stock trailers pull in and stop at the end. The 5’6″ gates are chained to the trailer to prevent animals from turning back. The 12′ gate is open to the drive alley and the animals turn and cross the scale into the pens. The alleys and pen fences must be constructed so the small animals cannot escape. The grooved concrete floors must be deep for cattle. This facility was designed with solid sided fences in the high use areas like the curved lane and crowd pen, and single file chutes. Blocking vision with solid fences keeps animals calm. The pen fence can be pipe and rail with open sides or large mesh fence to the floor.