Formerly American Rubber Company. Built in 1910-l9l9 on the site of the Aetna Mills north of lock 11. Chuck Guarro took over the Ace Rubber Co. name and moved his headquarters to the old building at 100 Beech St in the l990’s. The company produces retread tires, and many kinds of rubber matts. Ace Rubber is the sole producer of major league baseball mats inlaid with the league name, logo or mascot.