The miners' union has confirmed a further 63 redundancies on the West Coast.
Staff employed by Kaipara Limited were contracted to the Stockton open cast coal mine, which is owned by Solid Energy.
They were given notice on 10 September.
Engineering, Printing and Manufacturing Union spokesperson Garth Elliot blames Solid Energy's ongoing restructuring.
Mr Elliot says the affected workers stripped surface materials from the open cast mine.