YOU KNOW, THERE HAS NEVER BEEN ANY LARGE EARTHQUAKE IN MELBOURNE CBD, SO,IN THE EVENTS OF ANY LARGE SCALE SEISMIC ACTIVITIES, SOURCED FROM GEOSCIENCE AUSTRALIA, THERE ARE NUMEROUS FAULT LINES UNDERNEATH MOST AUSTRALIAN CITIES, THIS IS JUST A PROBABILITY , WHEN THE NEXT BIG EARTHQUAKE WILL OCCURS AGAIN IN AUSTRALIA CITIES, JUST LIKE THE 1989 NEWCASTLE QUAKE, GOT MANY PEOPLE BY SURPRISE, IT HAS BEEN A LONG TIME AGO TOO, SO THE NEXT BIG ONE CAN HAPPENS ANY TIME,THE SEISMIC CYCLE.GIVEN NOW , MOST CITIES ARE CROWDED WITH APARTMENT HIGH RISES, VERY LITTLE OPEN SPACE ,AVAILABLE FOR PUBLIC EVACUATION, THIS IS ONE OF THE MAJOR URBAN PLANNING OVERLOOK, WHEN & IF ANY WEAK, TALL SKYSCRAPERS COLLAPSES, FROM THE SEARCH & RESCUE LOGISTICS, PUBLIC EVACUATIONS, THE CITY PLANNERS, MUST INSTALLED SPECIFIC PROVISIONS , IE. PUBLIC SPACE, IN THE EVENTS OF EMERGENCIES, JUST TAKE A WALK DOWN SUTHERLAND LANE, OFF LATROBE STREET,MELBOURNE, YOU WILL SEE CLEARLY WHAT I MEAN, TWO HIGH RISE BUILDING ALMOST TOUCHING AT THE TOP, BARELY 6 OR SEVEN METRES IN BETWEEN, THE FIRES CAN JUMPS TOO, THERE IS REALLY NO PUBLIC SPACE IN BETWEEN THOSE BUILDINGS, ALONG THE ELIZABETH & VICTORIA MARKET PRECINT,VICTORIA, WHAT HAS YOU OBSERVE & LEARN FROM THE CHRISTCHURCH QUAKES, AT GROUND ZERO PERSPECTIVES,THE CITY PLANNERS NEEDED TO UPGRADE THEIR THINKINGS & EXPERIENCE ,FROM ACROSS THE NEIGHBOURS IN NEW ZEALAND, WE ARE CONNECTED TECTONICALLY