MELBOURNE (Reuters) – Up to 14 people were killed in landslides and by collapsed buildings during a powerful earthquake in the remote Papua New Guinea highlands, police said yesterday. Unconfirmed reports of up to 30 dead also emerged. The 7.5 magnitude quake that rocked the region early on Monday also damaged mining and power infrastructure. Two buildings collapsed and along with a landslide killed 12 people in Mendi, the provincial capital of the Southern Highlands. Dozens of aftershocks rattled the area, including a 5.7 quake yesterday afternoon, the US Geological Survey reported.