The MISC@1 disaster was a radiation contamination disaster , which happened on NUMBER@1 September , NUMBER@2 , in Mayak , a nuclear fuel reprocessing plant in LOCATION@1 -LRB- then a part of the LOCATION@2 -RRB- .

The MISC@1 disaster was a radiation contamination disaster , which happened on NUMBER@1 September , NUMBER@2 , in Mayak , a nuclear plant in LOCATION@1 -LRB- then a part of the LOCATION@2 -RRB- .
