<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2011) (Learn how and when to remove this template message) </Td> </Tr> <Table> National Union of Mineworkers <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Founded </Th> <Td> January 1945 (1945 - 01) </Td> </Tr> <Tr> <Th> Predecessor </Th> <Td> Miners' Federation of Great Britain </Td> </Tr> <Tr> <Th> Members </Th> <Td> 423,085 (1946) 750 (2016) </Td> </Tr> <Tr> <Th> Affiliation </Th> <Td> TUC, Labour, NSSN </Td> </Tr> <Tr> <Th> Key people </Th> <Td> <Ul> <Li> Chris Kitchen (secretary) </Li> <Li> Nicky Wilson (president) </Li> </Ul> </Td> </Tr> <Tr> <Th> Office location </Th> <Td> 2 Huddersfield Road, Barnsley </Td> </Tr> <Tr> <Th> Country </Th> <Td> United Kingdom </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.num.org.uk </Td> </Tr> </Table> <Tr> <Th> Founded </Th> <Td> January 1945 (1945 - 01) </Td> </Tr>

1. who was the leader of the national union of mineworkers