The China Grain Reserves Corp. said no losses or casualties were reported at its sites in Sichuan and Gansu provinces or Chongqing, the state-run Xinhua news agency reported.

An afternoon quake measuring 7.9 on the open-ended Richter scale struck in Wenchuan County, leaving upwards of 15,000 dead and tens of thousands injured, buried or missing.

China Grain said some of its warehouses suffered damage, including beam and wall cracks.

Premier Wen Jiabao said earlier this year China had as much as 200 million tons of grain in its reserves. Beijing ordered reserves distributed in quake-hit areas and directed local governments to keep an eye out for price-gouging.