Dec 15 (Reuters) - Arch Coal Inc ACI.N said it has chosen
to extend by 30 days the time period the company has to make
about $90 million in interest payment that was due on Tuesday.
Arch Coal, which ended a proposed debt swap in October that
was seen as key to delaying a potential bankruptcy, said it
plans to use the grace period to continue talks with creditors
to restructure its balance sheet.