A major labour movement campaign to re-unionise Australia’s vital iron ore industry is on the cusp of its first major strike battle, which could reshape the sector.

More than 100 production workers have joined a move towards strikes at BHP’s major iron ore port, with unions to meet on Friday to hash out their plans.

A major labour movement campaign to re-unionise Australia’s vital iron ore industry is on the cusp of its first major strike battle, which could reshape the sector.