from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To search for lodes.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To search after lodes. See costeaning.
from The 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.
Cornish cothas, dropped + stean, tin. (Wiktionary)
BRL has completed a successful trial quarrying and bauxite extraction costean programme of some 300 tonnes of bauxite for bulk sample for overseas customers.