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Among other things , he was President of National Confederation of Employers ' Organisations , 1925-26 ; Chairman of the Central Council under Coal Mines Act ( 1930 ) to 1938 ; Chairman of the International Conference of European Coalowners ' Organisations ; Chairman of the Joint Standing Consultative Committee for the Coal Trade of Great Britain , 1936-1944 ; President of the British Colliery Owners ' Research Association , Coal Utilisation Joint Council , and of the British Coal Utilisation Research Association .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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