Those which were unfit for human food, and the by-products of most of the others, were sold to various trades. Seven installations known as ‘Horse Carcase Economisers’ were set up on lines of communication. Each of these had fourteen workers who dealt with up to thirty carcasses per day. Hides were cured, and the flesh was dried and went into pig, poultry and dog food. Bones were crushed and degreased and ground into bone-meal. Oil from carcasses (up to 5 gallons per animal) went to soap manufacturers, and the hooves became glue. Many of these products were sent to England.
