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15 hours agoAs a former mine clearer the world does not need more mines. But as a former combat engineer mines done correctly (with proper mapping, fencing and marking) is way to control an axis. That’s why it still has its uses. Problem is 10 years down the line when the maps are lost, fencing gone and no markings.
Not really kept up on developments, but you can probably have a detonator that degrades. In rock blasting electronic detonaors are more and more prevalent. But might defy the purpose of being dirt cheap.