This is the 16123rd most frequent Russian word.
разминированию
"Разминированию" means "demining" or "the process of removing mines."
Here, the word 'разминированию' is in the dative case, indicating the topic of the briefing.
Инструктаж по разминированию проводится каждое утро.
The briefing on demining is held every morning.
In this sentence, 'разминирования' is in the genitive case, used to describe the programs related to demining.
Программы разминирования помогают обезопасить территорию.
Demining programs help to make the area safe.
Here, 'разминированию' is in the dative case, showing the object receiving the attention.