The first USDA-inspected mobile slaughter unit, built and operated by the Island Grown Farmers Cooperative, is 34 feet long. It was designed by Bruce Dunlop, IGFC member, with Featherlite, a trailer company.
These photos show the unit's interior:
The photo on the left shows the MSU skinning and evisceration area as seen from rear of trailer.
The photo on the right shows the carcass cooler behind the skinning area. Inedible offal and blood from livestock are composted at the respective farms.
For more MSU photos, see NMPAN's MSU case studies (red meat and poultry).