1950s Map of Newcastle and Suburbs, New South WalesZoom In For Detailed Preview: Skeleton map of Newcastle and suburbs Road map of the main routes to the Broken Hill Proprietary Company (B. H. P.) collieries within Newcastle as well as industries allied to the local coal mining within the Newcastle region as far north as East Maitland, as far south as Belmont and as far west as Cessnock. The inset map for the city area includes a key to city listing by reference number on the map banks, car parks,