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Use "countermining" in a sentence
""This will relieve us of the work of countermining, which is always tiresome and dangerous, and would be specially so here, where we should have to dive under that deep moat outside your walls."
"You will be then no stranger to the policy of life, which deals in mining and countermining, — now in making feints, now in thrusting with forthright passes."
"But Solmes, since he had fallen under the influence of Touchwood, was constantly employed in counteracting the schemes which he seemed most active in forwarding, while the traveller enjoyed (to him an exquisite gratification) the amusement of countermining as fast as Bulmer could mine, and had in prospect the pleasing anticipation of blowing up the pioneer with his own petard."