In a construction calamity of mudslide at Shenzhen city in China some 94 acres were surrounded and 33 buildings were destroyed. Over the last couple of years, massive amounts of Construction and Demolition waste (C&D) were deposited on the site proximate to neighbouring buildings on an industrial site. The volume of C&D waste that was neglected, caused to accumulate, a man-made waste mountain. Severe rains descended on the “apparatus” and turned the waste into a muddy hill. The waste broke through the containment wall during the rain and unleashed a tsunami of mud. The mudslide collapsed residential buildings, dormitories and commercial facilities. The devastation extended to loss of life and missing persons; more than 80 last count.