Russian Rusal, the world's largest aluminum producer by output, may delay the start of production at one of its biggest projects, seeking to ease a global glut of the metal. Rusal , led by Russian tycoon Oleg Deripaska, and other big aluminium makers are cutting output in response to record inventories and stubbornly low prices of aluminum, used in vehicles and packaging. Rusal said it would cut aluminum output by 8.5%, more than the 7% previously planned, as it seeks to support prices near four-year lows. Meanwhile, Rusal reported a recurring second-quarter net loss of US$208 million, due to falling prices and lower output, compared with a revised profit of US$125 million a year earlier. The company had been expected to post a loss of about US$142 million, according to banks and brokerages polled by Reuters.