Mining Line Icons Signs 647449072

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