Key construction contracts for the company include the Jilalan rail project in Queensland and BHP Billiton's iron ore railway duplication project in the Pilbara. The company's order book has fallen from $2.1 billion at this time last year to $1.4 billion this year, which Bowen said came mainly from the mining slowdown. The company today said it had lost around $348 million from its order book from contract cancellations and deferrals. However, Bowen said signs of a turnaround were already emerging.