Last week a fabricator asked me what we do about rust. This large business still lacks storage space and some of his slabs are outside back to back touching. He says that rust will appear and sometimes it goes through and through. Any suggestions?He says he bought a chemical but it has to be left on a while but if left on too long, it etches the stone. Frustration.Thank you for your time.Shirley Falcon--Shirley FalconFalcon Floor and Surface Care, LLCTelephone: 904-800-1525Visit list archives, subscribe, unsubscribe or change your subscription preferences: http://stoneandtilepros.simplelists.com/sccpartners Start a new conversation (thread): sccpartners@stoneandtilepros.simplelists.com