The Stop Adani activists allege the store's New Zealand based parent company, Fletcher Building, has entered negotiations with the financiers of the controversial Galilee Basin development.

"We're not trying to attack the local workers, it's the head office we want to send the message to," said event organiser Neil Harris.

"We intend to go in [to the store] before the protest to explain that we're there as a peaceful assembly."

The Australian head office of Tradelink was contacted for comment, but at the time of publication, had not provided any further information.

The Stop Adani group is trying to lobby the company away from involvement in the mine, in the hopes of halting its overall progress.

They believe that should the mine become a reality, it will set a precedent for at least six other mining operations to begin in the Galilee Basin.

"If [the Adani mine] opens, it opens possibilities for a range of other mines," Mr Harris said.

"Adani has started clearing the land, so it's already begun. If they get going, Adani says they will operate for 25 years, which will have disastrous consequences."

Mr Harris cited the plight of the black-throat finch, native to the mine's location, as a reason to preserve the landscape.

The population now in decline, the protesters are concerned that should the finches' natural environment be tampered with, the species may soon cease to exist.

"We're worried that if they stop now, there will still be damage to the environment, and perhaps [irrevocable] damage to the species that live there," Mr Harris said.

"Adani have said they will move the population of finches, but these birds have lived there for [many] years, they haven't wanted to move. Whether Adani has the power to move them and keep them in their new environment is yet to be seen."

Despite living close to 2000 kilometres away from the proposed mining land, Mr Harris said the push to halt Adani has grown steadily in Wagga and the Riverina.

"There are groups in Wagga and Albury and all around that are strongly and directly involved with opposing this," he said.

"People are aware that this is something that will affect us all. You can't burn coal and keep the carbon dioxide [pollution] locally, it spreads across the planet."

Saturday's two-hour demonstration will begin outside the Chaston Street store from 10am.

But Mr Harris admits it is unlikely to garner a groundswell of support.

"We don't expect it to be as big as recent marches in Wagga," he said.

"We don't believe that just because we get half-a-dozen people together in Wagga that they'll close down the mine immediately, but this does has worldwide consequences."