David is the General Manager at Chadwick Geotechnics, with over 25 years industry experience. As a Chartered Professional Engineer with a background in Engineering Geology, David has led major quarry redevelopment projects, delivering innovative earthworks solutions for complex ground conditions and large-scale material reuse.

David is an active contributor to industry forums, committed to advancing best practices in quarry activities and rehabilitation. His work spans transforming former quarries into residential and commercial developments, managing challenging fill operations, and designing sustainable strategies that minimize environmental impact. With a focus on quarry materials testing and specification, David ensures quality and compliance while optimizing resource efficiency. His leadership in projects such as Lilydale Quarry and other high-profile redevelopments highlights his ability to integrate technical excellence with practical outcomes.