capital. Anarcho-communism is a theory of anarchism which advocates the abolition of the state, private property and capitalism in favour of common ownership of the means of production. Anarcho-syndicalism was practised in Catalonia and other places in the Spanish Revolution during the Spanish Civil War. Sam Dolgoff estimated that about eight million people participated directly or at least indirectly in the Spanish Revolution. The economy of the former Socialist Federal Republic of Yugoslavia established a system based on market-based allocation, social ownership of the means of production and self-management within firms. This system substituted Yugoslavia's Soviet-type central planning with a decentralised, self-managed system after reforms in 1953. The Marxian economist Richard D. Wolff argues that "re-organising production so that workers become collectively self-directed at their work-sites" not only moves society beyond both capitalism and state socialism of the last century, but would also mark another milestone in human history, similar to earlier transitions out of slavery and feudalism. As an example, Wolff claims that Mondragon is "a stunningly successful alternative to the capitalist organisation of production". State-directed economy State socialism can be used to classify any variety of socialist philosophies that advocates the ownership of the means of production by the state apparatus, either as a transitional stage between capitalism and socialism, or as an end-goal in itself. Typically, it refers to a form of technocratic management, whereby technical specialists administer or manage economic enterprises on behalf of society and the public interest instead of workers' councils or workplace democracy. A state-directed economy may refer to a type of mixed economy consisting of public ownership over large industries, as promoted by various Social democratic political parties during the 20th century. This ideology influenced the policies of the British Labour Party during Clement Attlee's administration. In the biography of the 1945 United Kingdom Labour Party Prime Minister Clement Attlee, Francis Beckett states: "[T]he government ... wanted what would become known as a mixed economy." Nationalisation in the United Kingdom was achieved through compulsory purchase of the industry (i.e. with compensation). British Aerospace was a combination of major aircraft companies British Aircraft Corporation, Hawker Siddeley and others. British Shipbuilders was a combination of the major shipbuilding companies including Cammell Laird, Govan Shipbuilders, Swan Hunter and Yarrow Shipbuilders, whereas the nationalisation of the coal mines in 1947 created a coal board charged with running the coal industry commercially so as to be able