DDH1, a provider of technically innovative drilling services. agreed to merge with Swick Mining, a mineral drilling contractor, in a $115m deal. “For DDH1, partnering with the leading underground diamond driller in Australia is a natural evolution to our specialised surface drilling operations and in line with the disciplined growth strategy we unveiled as part of our ASX listing in March 2021,” Sy Van Dyk, DDH1 Managing Director and CEO.