DCHP-1 Online
showing Mining 
n. an indication of the presence of minerals in sufficient quantity to suggest a possible site for a mine.
See also: show
- 1936 . . . although they [prospectors] often found encouraging "showings," no mines could be operated so far from civilization until rail transport was secured.
- 1965 [Caption] Claim post on Ruddock Creek main showing.
- 1936 . . . although they [prospectors] often found encouraging "showings," no mines could be operated so far from civilization until rail transport was secured.