Descrição: Large Outdoor Wind Turbine: Light Constant Whistling Wind, Light Industrial Background

Descrição: Oil Refinery: Constant Steam Blast Roar

Descrição: Oil Refinery: Hot Steam Filament Rattle, Constant Light Background Rush, Light Activity

Descrição: Oil Refinery: Blast Furnace: Heavy Jet Like Roar

Descrição: Large Walk In Freezer: Heavy Compressor Hum, Large Fan

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