FILE - In this Wednesday, June 20, 2012, file photo a caterpillar machine is used at the Clinton Landfill in Clinton, Ill. Caterpillar cut its profit and revenue guidance on Monday, Oct. 22, 2012, saying the world’s economic conditions “are weaker than we had previously expected.” Caterpillar Inc. is the world’s largest construction and mining equipment maker, so its results are watched closely as a sign of where the broader economy is headed. (AP Photo/Seth Perlman, File)