THREE RIVERS, Mich. (April 20)—Rubber roller maker Mid American Rubber Inc. has expanded by adding a machine shop and warehouse space at its Three Rivers manufacturing facility. The company, having outgrown its 9,000-sq.-ft. plant, bought a local machine shop adjacent to its factory in October. The extra 5,000 square feet provides needed storage space and machine shop services. Mid American´s recent growth has spurred the need for more space and investments in new and upgraded equipment. The company has had 10 percent annual profit growth the past few years and is expecting about 25 percent growth this year due as it explores new markets.