The four-day Climate Camp on the banks of Lake Liddell culminated yesterday morning when activists broke down a wire fence and stormed on to land adjacent to Bayswater power station.

Another two activists attached themselves to nearby train tracks leading to the station.

‘‘We know that if we build Bayswater B, pollution will double, water impacts will double and health concerns will double,’’ Climate Camp spokeswoman Naomi Hogan said.

Police confirmed 69 people were arrested and charged with a range of offences relating to antisocial or criminal behaviour.

“It is disappointing that a minority are endangering others, particularly when there are many families and children present peacefully protesting,’’ Hunter Valley Local Area Commander Superintendent Des Organ said.

The action followed the arrests of two men who allegedly entered private land on Saturday and chained themselves to a coal conveyor.

Camp Climate member Ellen Roberts said concerns about the coal industry’s impact were growing within the wider community.

“Coalmining companies like Xstrata are eating up the landscapes of the Hunter Valley and Gunnedah Basin and contributing to the region’s place as one of the global hot spots of greenhouse gas pollution,’’ she said.

“There is a large and growing movement of ordinary people concerned about the impacts of coal – not only climate change, but loss of agricultural land, impacts on water, damage to people’s health, and environmental destruction.’’

Macquarie Generation said the action had not disrupted production.