UK Coal moved a step closer to securing its future today but warned one of its largest mines remains under threat.
The UK’s biggest coal producer slumped to a loss of £20.6m in the six months to 30 June, as a poor performance at its Daw Mill mine near Coventry contributed to a 20 per cent fall in production to 3.3 million tonnes.
UK Coal, which employs 2,500 staff, has reached an initial agreement with pension trustees and energy generation customers that will see them extend a support package worth £90m up to the end of 2015.
However, the South Yorkshire-based group warned it was "unlikely" that Daw Mill, which employs 800 staff, would continue to operate beyond early 2014, when current coal panels will have been exhausted.
This was after workers rejected new shift patterns in a ballot, although chairman Jonson Cox remains hopeful that an agreement can be reached.
More than 90 per cent of the total annual output is sold to generate about 5 per cent of Britain's electricity requirements. Its other deep mines are at Thoresby in Nottinghamshire and Kellingley in North Yorkshire.
The company owes its customers and banks £138.3m and has a funding deficit to its pension funds of approximately £430m.
Under a "highly complex" plan, its mining business would be left free of bank debt and with an affordable pension deficit reduction scheme.
Each mine will be restructured into separate legal entities to reduce the risk of any one mine's failure from bringing down all mines, a move that is expected to create a more stable platform for the mining business.
As part of this arrangement, from 2014 its pension funds will receive £30m a year plus any money in the mining business.
Trustees of the pension fund will also invest £30m in UK Coal's property business in return for a stake of 75.1 per cent in that business. The division, Harworth Estates, has 30,000 acres of land and other property.
Cox said: "While the ballot at Daw Mill has been rejected I don't think that's the end of the matter. I think there's probably a will at the mine to reconsider.
"The bigger story is that we are really at the point where a restructuring of the balance sheet is now agreed by a heads of terms agreement and that moves us a step towards being able to ensure the survival of UK Coal."