Bergbau
From LSJ
κατ' ἀρχῆς γὰρ φιλαίτιος λεώς → people are always ready to blame the rulers, people are against authority, people were fond of anything by which they could call authority in question
Bergbau, metallorum opera,n. pl.; auch bl. metalla,n. pl., z. B. B. treiben, metalla exercere.