During a parliamentary debate on the strike in its second week, both Labour and Conservative MPs praised the miners for the forbearance shown during the mass pit closures in the 1960s. Mine foremen and supervisors, represented by the
National Association of Colliery Overmen, Deputies and Shotfirers, did not strike. Following some confrontations with NUM pickets, the National Coal Board adopted a policy of giving leave on full pay to any members of NACODS who faced aggressive intimidation on the way to work. The strike was characterised by the miners sending flying pickets to other industrial sites to persuade other workers to strike in solidarity, which led to railway workers' refusing to transport coal and power station workers' refusing to handle coal. Power shortages emerged, and a
state of emergency was declared on 9 February, after the weather had turned cold unexpectedly and
voltage had been reduced across the entire
national grid. A miner from
Hatfield Colliery, near
Doncaster, Freddie Matthews, was killed by a lorry while he was picketing on 3 February 1972, and a huge crowd attended his funeral. The non-union lorry driver had mounted the pavement to pass the picket line and struck Matthews in the process. In the aftermath of the death, the picketing in the Doncaster area became more violent, with clashes reported with the NACODS members at Markham Main and
Kilnhurst. The pay concessions from the Coal Board came more than a week after the
Battle of Saltley Gate, when around 2,000 NUM pickets descended on a coke works in
Birmingham and were later joined by thousands of workers from other industries in Birmingham. The result was characterised as a "victory for violence" by the Conservative Cabinet at the time, in reference to some clashes between miners and police and to some throwing of stones and bottles at lorries trying to pass the pickets. ==Planned strikebreaking force==