{Princeton, West Virginia}...Mid-Vol Coal Sales Inc. of Princeton, West Virginia is suing British steel trading company Balli Steel PLC for breach of contract, arguing the company agreed last year to purchase 480,000 net tons of metallurgical coal in 12 monthly shipments at $130 per ton, but it reneged in the first month. Mid-Vol says it was forced to sell to other buyers at a lower price and suffered more than $10 million in damages. Mid-Vol filed the suit in McDowell County Circuit Court, but Balli Steel wants the case heard in federal court.