The R.E. Law Crushed Stone quarry near Port Colborne, Ontario, bought its oldest operating F-Class vibrating screen on March 20, 1943. The vibrating screen shipped two months later. The machine was then sold to Hard Rock Paving Co. along with the quarry in 1977. The Waterford Group bought the operation in 2008 and uses the F-Class at a quarry in Uxbridge, Ontario. Its operators say it still works flawlessly.