Police in Burma have used water cannon to break up a protest against the expansion of a copper mine near the central town of Monywa, activists say. Protesters said dozens of people were injured and their camps set on fire. Local farmers, monks and activists have been protesting against what they say are forced evictions to allow for the mine to be enlarged. The mine, Burma's largest, is jointly owned by the Burmese military and Chinese arms manufacturer Norinco.