Definitions
Century Dictionary and Cyclopedia
- In mining, to endeavor to ascertain the position of a lode by sinking pits through the soil to the bed-rock. The general direction of the lode having been, as supposed, approximately ascertained by means of work already done, the object of costeaning is to trace the lode still further through ground where its outcrop is not visible on the surface.
Wiktionary
- v. mining To search for lodes.
GNU Webster's 1913
- v. To search after lodes. See costeaning.
Etymologies
- Cornish cothas, dropped + stean, tin. (Wiktionary)
Examples
“BRL has completed a successful trial quarrying and bauxite extraction costean programme of some 300 tonnes of bauxite for bulk sample for overseas customers.”
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