to 50 tons group, investment is $1,395,850 to $1,871,380. On an annual ton capacity basis, costs for the 6 to 10 tons group are $30.80 and $26.77 per ton, respectively. In the 35 to 50 tons group, the costs are $19.17 and $17.99, respectively. In each group, the lowest tonnage model plant manufactures all ruminant