Knife River (KNF) came out with quarterly earnings of $2.60 per share, missing the Zacks Consensus Estimate of $2.82 per share. This compares to earnings of $2.58 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of -7.80%. A quarter ago, it was expected that this construction materials company would post earnings of $1.18 per share when it actually produced earnings of $1.37, delivering a surprise of 16.10%.Over the last four quar ...