Excluded from the scope of the Directive are only those machines which pose little or no danger as they are powered directly by manual effort; those machines treated by existing or forthcoming specific directives dealing with safety, and those for which additional essential safety requirements are considered necessary, (lifting and handling appliances, mobile agricultural and construction plant machines, machines for woodworking and transportation equipment). They therefore are dealt with by specific directives. It ought to be noted that the Commission extensively involved the social partners in consultations prior to tabling this propo ...[+++]sal and has informed them that it will study the proposal advanced by the European Trade Union Confederation for the establishment of a permanent tripartite body allowing the social partners and the representatives of public authorities to evaluate the impact of the application of the Directive and the standardisation work at the level of workers safety. The Directive will request Member States to take all appropriate measures to ensure that machinery may be placed on the market and put into service and use only if it does not endanger the health or safety of persons, domestic animals or property, when properly installed, and maintained and used for its intended purpose.