The paper gives an information about part of the investigations held in JINR Dubna within cooperation of several research institutions and universities. Experimental cross sections for proton induced reactions of an energy of 660 MeV with various fission products, minor actinides, and "major" actinides (plutonium, uranium, thorium) are studied. The paper describes 239Pu and natU experiments; other experiments have already been published or are planned for the time being. Cross section determination consist of three parts: experiment, data processing, and mathematical codes simulation of the problem. This paper deals only with experiment description and data processing methodology. Neither final results of processing, nor simulation of plutonium experiment are paper-ready at the moment. Uranium data have partially already been presented, final complete results are planned to be published with plutonium results together in reviewed journal
