CN, Canada’s national railway, said it plans to accelerate work on a US$33 million project to upgrade a 74-mile section of the Whitehall Subdivision line in Wisconsin. The upgrade between the towns of Wisconsin Rapids and Blair would allow increased car-loading capacity and train velocity for hydraulic fracture (frack) sand suppliers Badger Mining Corp., Preferred Sands of Wisconsin LLC, Atlas Resin Proppants LLC and Taylor Frac LLC. After the upgrade, CN would be able to transport heavier freight cars loaded with frack sand, up to a maximum of 286,000 pounds. CN, which began the work in 2012, plans to complete the project by December 2014, a year ahead of time.