On 15 October 1970, the under-construction West Gate Bridge, connecting Melbourne’s affluent eastern suburbs with its working-class west, collapsed. Thirty-five people died. It was Australia’s worst construction disaster. Over the past three years, academics Sarah Gregson from the University of New South Wales and Elizabeth Humphrys from University of Technology Sydney have been researching the disaster. For its 50th anniversary, they shared their research with Walkley-nominated cartoonist Sam Wallman to create a visual retelling the story of the collapse