Construction Week.

The article presents construction industry news briefs for the week of December 19, 2011. Topics include a tender offer by Martin-Marietta Materials for the purchase of Vulcan Materials Co., a settlement making the Washington Gas Light Co. responsible for the cleanup of pollution in the Anacostia River in Washington, D.C., and the prison sentence given to Thomas Aram Manok of the U.S. Army Corps of Engineers for conspiracy to accept bribes for construction contracts in Iraq.