emissions Smoke and Steam Emissions from Sawmill Stack Tower in the Black Hills by Pronghorn Productions in Land Use , People Full HD (1920x1080) – $19 HD (1280x720) – $15 Add to Cart Checkout Added to cart Smoke and Steam Emissions from Sawmill Stack Tower in the Black Hills $15 Coal Plant Pollution and Smokestacks in Wyoming on a Cloudy Spring Day by Pronghorn Productions in Land Use , People Full HD (1920x1080) – $15 HD (1280x720) – $9 Add to Cart Checkout Added to cart Coal Plant Pollution and Smokestacks in Wyoming on a Cloudy Spring Day $9
