An alliance of community groups will today seek the support of about 15 thousand households in Newcastle to join the campaign against a proposed new coal terminal.
The multi-billion dollar project would allow an extra 120 million tonnes of coal to be processed on Kooragang Island.
The Coal Terminal Action Group represents 16 different local organisations and its spokeswoman Cathy Burgess says it is conducting a letter box drop in the affected area.
Residents are worried about the potential health impacts of another coal-loader.
She says there are concerns for the health of locals.
"With the fourth terminal, that will mean there'll be an increase of more people developing respiratory problems because of the extra coal dust.
"People who are more disposed to respiratory problems - that means children, that means the elderly - they'll have an increased risk of getting sick," she said.
She says residents need to work together to voice their opposition.
"I think people recognise that it can get worse, and that's what people are really worried about.
"We're hoping that the State Government will realise that our health is more important than coal, and they will reject the coal terminal".