160 Lists of out- workers to be kept in cer- tain trades. Ch. 30. No. 2.] Factories. which persons employed by him on the operations or works attend, and in a position where they can easily be read by such persons. (3) Any person undertaking any building operations or works of engineering construction to which this Ordinance applies shall, not later than seven days after the beginning thereof, serve on the inspector for the district a written notice stating the name and postal address of the person so undertaking the operations or works, the place and nature of the operations or works, whether any mechanical power is used and, if so, its nature, the name of the local health authority within whose district the operations or works are situated and such other particulars as may be prescribed: Provided that (a) this subsection shall not apply to any operations or works which the person undertaking them has reasonable grounds for believing will be completed in a period of less than six weeks, except in such cases as the senior inspector may direct, and (b) where a person undertakes any building opera- tions or works of engineering construction in a place where such operations or works are in progress, he shall not be required to give such a notice as aforesaid if a notice was given in respect of the operations or works in progress. PART IN. HoME WorK. 50. (1) In the case of persons employed in such classes of work as may from time to time be specified by order of the Governor, the occupier of every factory and every contractor employed by any such occupier in the business of the factory shall— (a) keep in the prescribed form and manner, and with the prescribed particulars, lists showing the names and addresses of all persons (hereinafter referred to as outworkers) directly employed by him, either as workers or as contractors, in the business of the factory, outside the factory, and of the places where they are employed; and