Ключевые слова: atom, black, business, canister, cargo, construction, derrick, drilling, drop, energy, equipment, fuel, gallon, gas, gasoline, hat, icon, illustration, industrial, industry, isolated, jack, machine, molecular, molecule, motor, oil, oilman, petroleum, pipe, pipeline, pressure, price, protection, pump, rig, safety, science, sea, set, ship, silver, symbol, transportation, vessel, work, worker,