North American OSB manufacturers are still operating well below their technical production capacity. Estimates drawn up by two producers - Norbord and Louisiana-Pacific - show that mills continued to operate below 60% capacity in 2011. Suppliers had hardly raised their capacity utilisation rates this year, either, even though deliveries have been better over the past few months. Source: euwid-wood-products
Source:
http://www.euwid-wood-products.com/news/wood-based-panels/single/Artikel/north-american-osb-mills-running-at-60-capacity.html