In 1995 or 96 Remington added a Research and Development Department located in Elizabethtown, Kentucky, AKA E-Town to us Kentuckians. In 1997, I believe, is when Remington started making firearms in Mayfield, Kentucky.
The Mayfield plant is in addition to the Ilion, New York plant, which is where Remingtons have been made since 1828 and are still being made today. and also, although I could be wrong, I think the Mayfield plant is the only Remington "firearms" plant built since 1828. From 1816-1828 Remingtons were made in Ilion Gulch, Ny.