dredging - Wordage.info - Free Thesaurus Tool for Word Discovery - Expanded Thesaurus, Reverse Dictionary Lookup

mining collapse: the act of extracting ores or coal etc from the earth; laying explosive mines in concealed places to destroy enemy personnel and equipment

excavation collapse: the act of digging; "there's an interesting excavation going on near Princeton"; a hole in the ground made by excavating

drawing collapse: act of getting or draining something such as electricity or a liquid from a source; "the drawing of water from the well"; the creation of artistic pictures or diagrams; "he learned drawing from his father"; a representation of forms or objects on a surface by means of lines; "drawings of abstract forms"; "he did complicated pen-and-ink drawings like medieval miniatures"; an illustration that is drawn by hand and published in a book or magazine; "it is shown by the drawing in Fig. 7"

machinery collapse: machines or machine systems collectively; a system of means and activities whereby a social institution functions; "the complex machinery of negotiation"; "the machinery of command labored and brought forth an order"

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