sergei shpag, deputy head of the investigation department, head of the investigative department of theel region, exercised direct procedural control over the investigation of the criminal case, provided organizational, practical and methodological assistance. in my personal opinion. all negotiations on conducting transactions, on conducting the necessary, let’s say, research written in the necessary way by him, were conducted directly by yurchenko, in my opinion, more technical functions were performed by the spouse, who carried out the delivery of the mixture from the territory of the federation to belarus, and so on, but it was yurchenko who was the brain center, in my opinion. thus, the multifunctional mineral mixture ziol-3 is born. it was important for the investigation to understand what was in the additive that significantly undermined the health of the animals. as part of the verification material , a study was assigned to the gomel chemical plant, which established the composition of this feed additive. and it was found that it consists of 80% zealite. this is it a mineral vol