Miners at a Yorkshire pit are staging another 24-hour strike in their on-going dispute with UK Coal. The National Union of Mineworkers (NUM) had suspended industrial action while it sought a High Court injunction against UK Coal.
The company wants to introduce new working practices at Kellingley when miners are transferred there as the Selby complex closes.
The stoppage will start at 0600 GMT with pickets at the site from 0500 GMT.
The NUM had held a 24-hour walkout on 8 March which, according to the union, was supported by all its 350 members at Kellingley.
UK Coal says it wants to change working arrangements to enable it to absorb 240 miners who are being moved to Kellingley when the Selby mines close this spring.
But the NUM have described the proposals as "anti-social", arguing they would result in men working 12-hour shifts in "hostile conditions" underground.
NUM branch secretary at Kellingley, Chris Kitchen, said "The company has given us notice that 293 men are on 90 days notice of termination of contracts".
But Stuart Oliver of UK Coal said: "Last Friday we advised employees one of the options as a result of legal action was the termination of existing contracts to be replaced immediately with revised terms embracing flexible working.
"There would be no dismissals and all current benefits would be maintained in a seamless transition from one set of terms to another."
Chris Kitchen said the legal move to seek an injunction against UK Coal had been put on hold while the union sought clarification of some points raised by the firm's London-based lawyers.