Sigma-Aldrich plans to expand its operations in Scotland with a new powder manufacturing facility at its Irvine site to support its risk management program, and to provide an internal back-up supply for customers.   The new facility will create 24 new jobs and is being supported by a $2.4 million Regional Selective Assistance grant from Scottish Enterprise, the country’s economic development organization.   “The liquid facility investment at Irvine was a significant move for SAFC as part of our ...