to be fenced, and provides for the installation of a handwheel for separating the rolls, of hand and foot brakes, and of protection for gearing, belts and pulleys." A Decree prohibiting the employment of persons whose infirmities predispose them to accidents, dated 14 September 1945, "amends Section 11 of the accident prevent regulations of 22 January 1936, by adding a subsection 13 which prohibits the employment in any occupation of workers who are clearly not in a normal physical or mental condition." A Decree concerning demolition dated 14 September 1945 "amends Section 70 of the accident prevention regulations of 22 January 1936. Before undertaking any excavation or demolition bordering on the public highway, permission must be obtained from the Directorate of Municipal Works. Neighbouring walls must be adequately shored, and precautions must be taken to prevent heavy falls of material from damaging adjacent buildings. Specified precautions must also be taken when lowering demolition material on to the public highway. As a general rule, buildings must be demolished storey by storey, beginning at the top. When necessary for the safety of the workers, platforms and scaffolds must be used. If other means of protection are not practicable, safety belts must be worn." A Decree of 15 March 1947 "provides for Government intervention in the settlement of collective industrial disputes by means of conciliation boards." Act No. 10,910 of 4 June 1947 "provides for the establishment of other special boards to deal with transfers of salaried or wage-earning employees of public-utility and analogous undertakings; these are composed of three magistrates or exmagistrates, one to be appointed by the employees, one by the undertaking and the third by agreement between the two sides. In case of failure duly to appoint any member of the board, the appointment is made by the President of the Supreme Court of Justice. This Act does not cover employees with less than ten years' service or those whose work necessarily involves frequent transfer from one place to another." Act, No. 10,913 of 25 June 1947 "provides for the establishment of a joint committee, a conciliation board and a court of arbitration in each undertaking holding a concession for a public service. The joint committee is composed of not more than three representatives of the .undertaking and an equal number of delegates of the personnel, the latter being elected by secret ballot under the supervision of the electoral authority.