Duratec (ASX:DUR) said it secured four contracts across its core energy, marine, and mining and industrial sectors for a combined value of around AU$70 million, according to a Tuesday Australian bourse filing.

This included a construction management contract at Orica's (ASX:ORI) Hunter Valley hydrogen hub, a contract to deliver ECI services as part of the design of the jet fuel expansion program on behalf of Perth Airport, a wharf infrastructure remediation project by Fremantle Port Authority as part of the Kwinana Bulk Jetty upgrade, and the Gove structural integrity remediation services project at Rio Tinto's (ASX:RIO) bauxite export facilities in Nhulunbuy, Northern Territory, the company said.

Duratec's shares added about 1% in recent Tuesday trade, while Rio Tinto Group's shares were down 2%.