Arcelor Mittal is planning to invest C$2.1bn (US$2.15bn) to expand its Mont-Wright mining complex and additional construction at Port-Cartier in Canada.
The firm is planning to increase its iron ore annual production from 14Mt to 24Mt by 2013, and increase its iron ore pellet production to 18.5Mt.
Mont-Wright mining complex consists of open-pit mine, an ore crusher and a concentrator, huge maintenance workshops, a large parts storage facility and a train loading system.
Arcelor Mittal Group management board member Peter Kukielski said the expansion is part of the firm's plan to increase its iron ore production to 100Mt by 2015.
The project is subject to environmental and other regulatory approvals.