Three businesses based in Fredericksburg are among the 50 fastest growing in the commonwealth, according to the the Virginia Chamber of Commerce. SimVentions Inc., a software-based government contracting company headquartered in Fredericksburg, was ranked 25th. Marstel–Day, the Fredericksburg-based environmental consulting firm, was 33rd on the list. And Cortek Inc., a Fredericksburg engineering and technical services contractor, was the 50th fastest-growing company. Click Here for Full Article