The US Department of Agriculture (USDA) is mulling a raft of new safety measures in the wake of the second largest ever recall in history. These could include the compulsory irradiation of all meat for certain plants. According to consumer groups involved in the investigation following the massive beef recall that hit ConAgra Foods last month after meat was contaminated with E. coli, the USDA is mulling a whole range of safety measures. Consumer groups and the meat industry have been asked to feed into the USDA suggestions on how food safety can be improved.