HALIFAX — Postmedia Network Inc. has announced plans to buy "certain businesses" belonging to SaltWire Network Inc. and The Halifax Herald Ltd., the two insolvent media companies behind Atlantic Canada’s largest newspaper chain. White said job losses at SaltWire seem inevitable in the months ahead as Postmedia continues to struggle with a heavy debt load. The Halifax Herald Ltd. owns The Chronicle Herald, an independent daily newspaper that was founded almost 200 years ago. Unifor represents 35 people at the newspaper, and more than 10,000 media workers across the country. The media companies were also accused of failing to top up pension funds and remit HST payments to the federal government.