Bracke C16 Biomass Harvesting Head The Bracke C16.b is an efficient head for silviculture and biomass applications. The head has a unique cutting solution, high capacity and an open saw box for easy maintenance. he Bracke C16.b combines highly efficient clearing with the ability to make use of valuable assortments such as biomass. This makes it a head suited to all types of mechanized logging, such as plantation cleaning , corridor clearing, pre-commercial thinning, thinning in problem stands an