A ballot for a national strike in 1935 produced the largest majority vote in favour of industrial action. Wages in Nottinghamshire, where the breakaway "Spencer" union-represented 80% of the workforce, were the lowest in the country. Men who remained loyal to the MFGB were victimised and colliery owners refused to recognise the federation. Matters came to a head at Harworth Colliery in 1936. MFGB members demanding recognition struck for six months. Several officials and members were imprisoned and the breakaway union became even more isolated. The MFGB balloted its members about merging with the "Spencer" union but the proposal was rejected. The federation's leadership continued to negotiate until 1937 when the breakaway union returned to the MFGB but amid much bad feeling.