A pair of famous chimney stacks, which defined the architecture of Liddell Power Station in the NSW Hunter Valley, have been reduced to rubble.

The demolition of the Liddell Power Station, which powered homes and businesses in NSW for more than 50 years, is underway.

For more than half a century, the Liddell power station burned black coal to generate electricity to power New South Wales. On Tuesday, its two 168-metre tall concrete chimney…