8 bays. ( by. Colchester Merino Mill The Colchester Merino Mill built in 1880 and extended in 1902 stands in a group of buildings built on a large rock outcrop. The buildings are dated from 1860 to 1902. The 1902 extension connected it to the Winooski Worsted Mill. Its name tells us that this was a woolen mill built to spin the finest long staple merino wool. It was a 3-story brick built mill with heavy beam construction. The twenty pane windows are topped by segmental brick arches. It was powered by an internal waterwheel which exploited a sliceway from an earlier mill, and used the head provided by the timber dam at the lower falls. Winooski Worsted Mill In the same complex as the Colchester Merino Mill, the Winooski Worsted Mill is a similar design. Worsted is a different thread from woolen using combing rather than carding techniques. The building was similar in design to the Merino Mill; the wood beams though were strengthened by metal tie rods. Carbonizing Mill This is a 1909, brick built structure built for one process in the cleaning of wool. It is a two-story brick building, with basement, oriented parallel to West Canal Street. It comprises a twenty-by-five bay main block, with projecting center bays, attached engine room and dye house with the typical louvred slat roof lights. Raw wool would be weighed and sorted according to a variety of classifications, and sent on for opening, willowing and pickering. Wool fibers would be spread into smooth open layers, cut into slices and cleared of large pieces of vegetative matter. It would be sent for cleaning, or scouring in large vats containing a solution of water, soap and carbonate of potash, and then dried. Scouring did not remove all vegetative particles. In a carbonizing process the wool passed through bowls or troughs containing a solution of sulfuric acid or aluminum chloride where the remaining burrs were burnt off. Timber dam A lattice work of timber was built across the river, in a manner that was common in New England timber crib dams, what is interesting is the infilling. This was a very early example of the use of concrete. It is here that the Chase Mills Hydro-electric project will be situated. Current use The Hydropower Reform Coalition has used the water channels to power a 7.4MW Turbo-Generator. Some of the buildings have been converted