While the activity is being carried out, the States concerned shall exchange in a timely manner all available information concerning that activity relevant to preventing significant transboundary harm or at any event minimizing the risk thereof. Such an exchange of information shall continue until such time as the States concerned consider it appropriate even after the activity is terminated.
该项活动进行期间，各当事国应及时交换该项活动有关预防或随时尽量减少重大跨界损害的危险的所有现成资料。即使该项活动已经终止，也应该继续交换这种资料，直到各当事国认为合适才停止。