The symbolic faces of both sides of the contentious CSG industry are speaking out.

Dayne Pratzky is the star of Frackman - anew documentary feature film on the risks that coal seam gas extraction poses to water supplies and rural communities.

Darren Lockyer is a Queensland rugby league legend and now a paid ambassador for Origin Ener­gy’s $23 billion Australia Pacific gas project.

Mr Pratzky says Mr Lockyer has sold his name and image to a dangerous and “devastating” industry.

“Darren’s entitled to his decision but I think he made the wrong decision. It would have been great if he’d come and spoken to people like myself instead of just swallowing the line fed to him by Origin Energy that coal seam gas is the best thing since sliced bread,” Mr Pratzky told News Corp reporters.

“Once the damage is done, I think he’ll be ­embarrassed and ashamed.”

Mr Lockyer’s response was characteristically blunt.

“He’s entitled to his opinion and I’ll leave it at that,” he said.

Frackman hits Queensland cinemas this week, after being made from more than $400,000 in taxpayer funding through Screen Queensland and Screen Australia.

It features Lock the Gate anti-CSG campaign founder Drew Hutton as well as radio shock jock Alan Jones, both of whom have railed against the industry.

Mr Pratzky said he hoped Frackman had would open Queenslanders’ eyes to the “industrialisation of farmland three hours from Brisbane”.

“I think when people like Darren Lockyer realise what a flaming disaster CSG is, and the destruction it’s causing for future generations, they’ll hang their head in shame and say ‘what the hell were we thinking,” he said.