The late-1960s yielded the advent of high-production coremaking with the phenolic-urethane coldbox (PUCB) process. Since its introduction, phenolic-urethane has quickly grown to the largest employed resin process, globally, and sets the performance standard in terms of productivity and casting quality. However, as the metal-casting industry progresses toward the year 2000, the need for binder technol. that delivers higher productivity and improved casting quality with reduced environmental impact still exists. In this paper, new, amine-cured coldbox resin technol. is introduced. The chem., sand performance, process considerations, casting attributes, environmental impact, and field application of this New Resin System (NRS) technol. will be described.