1. (a) The quantities of skim milk and butterfat in milk and each milk product received at his nonpool plants, from dairy farmers, from other plants or nonpool units, from such handler's own farm, from other handlers, and from other sources.
2. (b) The quantities of skim milk and butterfat in milk and each milk product moved out of, or on hand at, his nonpool plants and the destination of such skim milk and butterfat.
3. (c) Information concerning land, buildings, surroundings, facilities and equipment at any of his plants.
4. (d) The current receipts and utilization of skim milk and butterfat at each of his pool plants and pool units.
5. (e) Such other information as may be necessary for the administration of the provisions of this Part.

At such time as the market administrator may request, each handler shall report to the market administrator in the manner and on forms prescribed by the market administrator: