3 Interpretation In these regulations, unless the context otherwise requires,--- Act means the Dairy Industry Act 1952 approved person means a person approved by the Director-General under regulation 7 chemical substance includes an agricultural compound, a veterinary medicine, an environmental contaminant, an extraneous substance, a toxic substance, and the metabolites of those substances Director-General means the chief executive of the Department of State that, with the authority of the Prime Minister, is for the time being responsible for the administration of the Act farm dairy--- (a) means a dairy where milking animals are milked; and (b) subject to paragraph (c), includes--- (i) any stockyard, milking yard, stable, stall, or shed associated with a farm dairy; and (ii) any dairy associated with a farm dairy where milk extracted in the farm dairy is collected, filtered, deposited, separated, cooled, or stored, or treated or stabilised to prepare for transport; but (c) does not include a place (that is not a dairy where milking animals are milked) where milk is processed, or treated, otherwise than by being collected, filtered, separated, stirred, or cooled, or treated or stabilised to prepare for transport operator means--- (a) for a farm dairy, every person who controls or manages the farm dairy; and (b) for a dairy factory, every person who conducts business at the factory programme means the dairy residue monitoring programme established by regulation 5 registered laboratory means a laboratory registered under the Dairy Industry Regulations 1990 (SR 1990/290) residue means a chemical substance that remains in raw milk or dairy produce and that is likely to be harmful to a human.