WELSH COAL MINERS ON STRIKE 1912 Under pressure from the miners in the Rhondda, the Miners Federation of Great Britain, to which the South Wales Miners' Federation were affiliated, persuaded their members, in all British coalfields to join the strike in 1912. The effect of so much disruption of labour led to the government passing the Minimum Wage Bill in the same year; furthermore, it gave the miners a sense of power and attracted many more to their cause.