Who we are. At Mercer Mass Timber (MMT) we are exceptional people making mass timber for a more sustainable world. We are North America’s largest Mass Timber Manufacturer, with facilities in Penticton, British Columbia, Spokane Valley, Washington, and Conway, Arkansas with a combined annual production capacity of over 255,000 cubic metres of mass timber. MMT is part of Mercer International, a leading forest products company who is one of the world’s largest market pul...