Ключевые слова: barrel, building, business, chemical, design, drill, drilling, electricity, energy, extraction, factory, fossil, fuel, gas, gasoline, graphic, icon, illustration, industrial, industry, isolated, line, oil, petrol, petroleum, pipe, pipeline, plant, platform, pollution, power, production, pump, refinery, resource, rig, set, sign, station, storage, symbol, tank, tanker, technology, thin, tower, transportation, truck, valve,