ἀργύρεια
From LSJ
συνετῶν μὲν ἀνδρῶν, πρὶν γενέσθαι τὰ δυσχερῆ, προνοῆσαι ὅπως μὴ γένηται· ἀνδρείων δέ, γενόμενα εὖ θέσθαι → it is the part of prudent men, before difficulties arise, to provide against their arising; and of courageous men to deal with them when they have arisen
Russian (Dvoretsky)
ἀργύρεια: (ῠ) τά серебряные рудники Xen., Aeschin.
English (Woodhouse)
(see also: ἀργύρειος) silver mines