Gillies Bros. new 'fireproof' mill at Braeside was built in 1920 with reinforced concrete and eight inch brick walls on solid rock. The mill had a cutting capacity of 150,000 feet daily when it opened in 1921. The mill was expanded and modernized in 1969 and portions of its storage and kiln operations were rebuilt after a fire in 1976. The buildings were completely demolished in 2012.