Mines are the second-most-frequent cause of injury for Ukraine's soldiers, a medical officer told The Guardian. Ukrainian soldiers have described the slow, desperate effort to progress through dense minefields. The secretary of the country's National Security and Defense Council, Oleksiy Danilov, called the density of Russia's mines "insane" earlier this month. In some cases, Ukrainian soldiers have been blasted by mines as they try to reach their comrades who were hit by other mines, the Times reported. One Ukrainian unit currently dealing with Russia's mines saw two sappers lose feet in explosions in the space of two weeks, The Guardian reported.

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Persons: Serhiy Ryzhenko, Oleksiy Danilov, Oleksii Reznikov, Reznikov Organizations: Guardian, Service, country's National Security and Defense Council, New York Times, Times, Sky News, Ukraine, Ukrainian Locations: Russia, Ukraine, Wall, Silicon, Ukrainian, Dnipro, Ukraine's