Ключевые слова: bars, bulldozer, business, construction, digging, dirt, duty, earth, economy, equipment, excavation, extraction, financial, gold, hardhat, heavy, him, industrial, industrialization, industry, investment, labor, machinery, metal, metallic, minerals, mining, money, native, nuggets, pile, precious, quarry, resources, rocks, safety, shallow, shiny, soil, tools, treasure, valuable, wealth, workers, yellow,