Tugboat operator Teekay Shipping and the world's fourth largest iron ore miner Fortescue Metals Group have condemned the decision of 56 tugboat workers to bring Port Hedland to a halt for four hours next Wednesday .
Tugboat operator Teekay Shipping and the world's fourth largest iron ore miner Fortescue Metals Group have condemned the decision of 56 tugboat workers to bring Port Hedland to a halt for four hours next Wednesday .