AMSTERDAM: Tata Steel’s Dutch works council could take until August to complete its assessment of a planned joint venture with Thyssenkrupp, its president said, questioning the German group’s timeline for a signing of the deal by end-June.”We expect to need at least two to three months to finish our process,” Dutch works council president Frits van Wieringen told Reuters. The council started its evaluation on May 1.Thyssenkrupp earlier this week said it expected to be able to sign the deal with Tata Steel in the first half of the year.But this will not happen without the consent of the Dutch workers, van Wieringen said.