These resources focus on model railroading and model railroad operations. Because the OpSIG does not control these external sites, please email Resources@OPSIG.org if the links are no longer valid.
The Ry-Ops-Industrial chat group is a great place to talk with other modelers, many of whom belong to the OPSIG, among several other SIG's. The OPSIG is pleased to interact and participate with folks on this chat list, but it is not an official OPSIG function and nothing said on the list should be taken as official OPSIG Board policy.
View the group here: https://groups.io/g/Ry-ops-industrialSIG