Beijing to Close Factories for Olympics Published: April 14, 2008 Times Topics: Olympic Games (2008)BEIJING (AP) -- Beijing will implement a series of temporary measures to stop construction and close heavy industries, all aimed at cleaning the city's notoriously polluted air when the Olympics begin in four months. All digging and pouring of concrete on construction sites will be suspended from July 20-Sept. 20, the city's Environmental Protection Bureau said. Nineteen heavy-polluting companies also have been told to cut their emissions in the same period by a further 30 percent.