He took on the role on a temporary basis earlier this year and has led the company in that capacity while the board continued the international search process as part of succession planning that commenced last year.

Orica chairman Russell Caplan said: "Following an extensive and rigorous global search, the board is pleased to be able to appoint Alberto to the role of managing director and CEO. Alberto is a world-class executive with broad leadership experience across large, global, complex organisations in the resources sector."

Calderon said: "During my time as interim CEO I have been privileged to be able to spend more time with our people, investors and customers, listening to their views. My focus will be on ensuring the execution of Orica's strategy as we continue on the path to being a simpler, more flexible and efficient company, and a partner of choice for our customers globally."