Consol Energy posted unexpected loss after idling coal mines

Consol, the largest US coal producer by market value, disclosed an unexpected third-quarter net loss after idling mines in response to lower demand. Average analyst estimates pegged net income of 33 cents a share in the period. Consol produced 11.6 million tons of coal in the quarter, 22 percent less than it expected July 26. Consol is scheduled to report full results on Oct. 25.