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威廉姆斯矿是加拿大最大的黄金产地，每年从230万t矿石中生产45万盎司黄金。采用高度机械化、自动化的地下采矿作业以便达到并维持高水平的生产能力并降低生产成本。矿井通风系统经改造包含一条新的通风井及可变角度叶片式轴流风机。这一改造容许拆除了井下若干台风机装置。在安装功率方面实现了很大的节约。加热井下通风流的费用占矿井作业费用的很大一部分。从排风并的排风中，矿井水中以及空气压缩机的冷却系统中回收热量，使通风加热费用显著减少。这些废热用来补助并下通风流的丙烷燃烧加热空气系统。另外一项好处是夏季对空压机的冷却起散热作用。本文阐述了系统设计、节能数据及返本计算。
The Williams Mine is Canada’s largest gold producer, producing 450,000 ounces of gold annually from 2.3 million tonnes of ore. Use highly mechanized, automated underground mining operations to achieve and maintain high levels of production capacity and reduce production costs. The mine ventilation system was retrofitted to include a new ventilation shaft and a variable-angle vane axial fan. This modification allowed the demolition of several typhoon units downhole. Great savings in mounting power. The cost of heating the downhole ventilation stream accounts for a significant portion of the mine’s operating costs. From exhaust ventilation and ventilation, mine water and air compressor cooling system to recover heat, ventilation and heating costs significantly reduced. These waste heat is used to supplement and ventilate the propane combustion heating air system. Another benefit is the cooling effect of the air compressor during the summer. This article describes the system design, energy-saving data and return calculation.