Hearings of the International Joint Commission in re remedies for the pollution of boundary waters between the United States and Canada

by International Joint Commission

Mr. Paterson. No.

Mr. Magrath. What would be the minimum population that you consider it would be feasible to erect a system for?

Mr. Paterson. Do you mean commercially?

Mr. Magrath. Yes.

Mr. Paterson. Well, on the dry process, I should think down to 1,000 people, or probably 500 people. In England, the War Office, at two of their camps, have put in small plants for about 1,000 men. They call them field destructors, and they get sufficient oil to run the machines, but they do not save the products.

Mr. McCullough. What process of sedimentation do you use?

Mr. Paterson. They have a series of sedimentation tanks, and they use both lime and alumina to precipitate.

Mr. Tawney. Are the costs of the precipitants included in the cost you have mentioned?

Mr. Paterson. No; this is purely for the treatment of the solids.

Mr. Powell. It includes the drying?