Breaking Flooring News Armstrong World Industries reports big gains in Q4 February 28, 2012 Armstrong World Industries has reported fourth quarter operating income of $21.6 million, up more than $50 million over the 2010 period.See the full story at www.prnewswire.com. Share This Story You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.