Simple past tense and past participle of mothball.(verb)
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Use "mothballed" in a sentence
"On the surface Abcourt seems to have the goods; known and growing resources, 12 million in mothballed infrastructure (estimated replacement value) and it resides in Quebec where the Provincial Government practically pays you to drill holes in the ground."
"Musker: Basically then when 2-D went away here they kind of mothballed CAPS and CAPS had been kind of band-aided and paper-clipped together, the production software system."
"Mr. Gates said the Guantanamo Bay facility would almost certainly be "mothballed" after the current detainees were freed or transferred to the U.S."