sentences:  In 1970, a high-grade iron-ore mine was opened at Pannawonica in the Pilbara region of Western Australia, with a rail line to processing facilities at Cape Lambert for which the residential township of Wickham was built.A pellet plant was built but ceased operation before 1980, following a sharp increase in the cost of diesel fuel.During the 1970s, Cleveland-Cliffs had sizeable interests in uranium and shale oil fields, as well as the oil and gas drilling industries.