Ключевые слова: apparatus, canada, carbon, co2, conservation, counterweight, country, countryside, crank, crude, diesel, drill, earth, emission, energy, environment, equipment, extraction, farm, finite, fossil, fuel, gas, gasoline, gear, hammer, head, industrial, industry, mechanical, mine, mining, natural, nodding, oil, onshore, overground, petrol, petroleum, pollution, post, production, pump, pumpjack, resource, rig, rural, samson, sustainability, well,