July 3 (Reuters) – Workers at BHP's South Flank and Mining Area C iron ore operations in ‌Western Australia have voted to approve a new ‌labour agreement, unions said on Friday, while noting that many remained ​dissatisfied with the deal.

The Combined BHP Ports Unions said 58% of workers voted in favour of the agreement put forward by the mining giant, ending a round ‌of negotiations over pay ⁠and entitlements.

The agreement includes a guaranteed 16% pay hike over its four-year term, increases ⁠to site-based allowances, and a new payment scheme for delayed flights, Tim Day, WAIO Asset President at BHP, ​said in ​an emailed statement.

The deal ​covers 1,814 workers, with ‌1,618 participating in the ballot, Day added.

A Combined BHP Ports Unions spokesperson said that a sizeable minority had voted against the agreement because they felt it did not adequately address issues including the selective usage of ‌company policies and the lack ​of clear progression and classification structures.

The ​vote comes as ​negotiations continue at Port Hedland after workers ‌voted in favour of strike ​action last month.

Port ​Hedland is one of the largest iron ore loading ports in the world and the biggest ​in Australia and ‌is linked to some of BHP's mines in ​the Pilbara region.

(Reporting by Anjali Singh in ​Bengaluru; Editing by Sonia Cheema)