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At first they thought their own plant was the cause but then they realized that it was coming from the southeast , from the Soviet Union , and eventually Chornobyl some 800 miles away was pinpointed from wind patterns . This blending of algorithms also allows differences between two circuits to be better contained so that defects can be pinpointed . Electrons and positrons are elementary , however , so their collisions are cleaner , allowing the production of specific particles and processes to be pinpointed and amplified both by tuning the energy of the beams to certain thresholds and also through high precision measurements . Such results are useful for site management and planning purposes , in excavation projects where cost-savings can be realized because the exact locations of archaeological features can be pinpointed , and the imagery and maps themselves offer primary data relevant to analyses of settlement form and structure . After several appointments and a thorough evaluation of her condition , neurologists at Mayo Clinic determined that Carla 's seizures could be pinpointed to one area of her brain , the left temporal lobe , and it was very likely that surgery could correct the problem .