JSW Steel Limited (BSE:500228) is reportedly in talks to acquire a 20% stake in Australia's Blackwater coal mine, with the purchase expected to cost $1 billion. Media reports say the deal is expected to close by the end of this financial year, despite the companies being undecided on a final valuation. Reports in the Australian media value the operation ?

formerly owned by BHP Mitsubishi Alliance ? at $2.5 billion. The current valuation is reportedly 78.1% of the total amount Whitehaven Coal paid for both the Blackwater and Daunia coal mines.

Whitehaven is looking to sell a 20% stake in the mine it acquired just a few months ago, amid a pay dispute with workers. ?Two parties ? one from Japan and one from India ?

may be about to surface as buyers of a stake. While the identities are unknown, sources pointed to steel producer JSW Group of India or Nippon of Japan,? the Australian Mine Safety Journal reported.