West Coast miners will march through Greymouth today in a fight to keep the Spring Creek mine open.
Organisers hope 500 people will join the march, in what could be the biggest protest on the West Coast since the end of native logging.
Solid Energy has suspended operations at the mine, which employs up to 260 people and 130 contractors in a town of 10,100.
Last week Solid Energy announced it had made an after-tax loss of $40.2 million.
Its chief executive Don Elder attributed a steep drop in coal prices for the loss.