An employer is under a duty to safeguard employees from dangerous machinery. By the Factories Act 1961, all dangerous parts of machinery must be securely fenced, unless they are in such a position or of such construction that they are as safe as if they were securely fenced. The Mines and Quarries Act 1954 deals with the safety of machinery in mines and quarries, and the EU Machinery Directive and attendant regulations also lay down rules in this field. The Health and Safety at Work Act 1974 contains general provisions on safety at work. See also defective equipment.