Lunch Presenation Challenges and Opportunities of New Quarries in Hong Kong (香港新採石場面臨的挑戰和機遇) 22 June 2018. The Branch was delighted to host a lunch presentation on the 22nd June; with a presentation by Ir Clayton Chan, Executive Director, Geotechnical of AECOM Hong Kong, on the Challenges and Opportunities of New Quarries in Hong Kong.