Cinematic 4K 60 fps. Open cut mining is a surface technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunneling into the world, such as long wall. Gold silver copper uranium diamond molybdenum lead zinc lignite mineral natural nature crude raw unrefined virgin unripe metal reserves reserve unprocessed deposits ore bed mountain colored mountains mount colorful painted hued staining stirring variegated multicolored cave hole motley varicolored color industry gravel debris rubble rubbis red excavation dig diggings minefield orange grey blue green yellow purple cast violet white black pink truck trucks UHD 3840X2160.