24-7 Diamond Drilling & Sawing Services Limited were contracted to attend the Marsh Mills site after the main contractor had issues with several sub-contractors causing program delays and issues. 24-7 Diamond Drilling works were Wire Sawing round holes and Track Sawing. They were also required to do Diamond Drilling to remove concrete structures within the sewage treatment tanks. Marsh Mills is a large active water treatment facility which South West Water were heavily investing in.