mining line icons signs set. collection of extracting, digging, unearthing, uncovering, drilling, essaying

vector sign icon extracting digging unearthing uncovering drilling essaying quarrying panning smelting refining ore coal mineral tunneling prospecting salting shoveling leaching excavating milling heading exploitation hydrometallurgy pyrometallurgy electrolysis dressing open pit mining deep surface hydraulic strip drift placer mine carting tailing sluicing jigging