On a building site bricklayers will often use an electric angle grinder with a diamond steel blade or stone-cutting disc to cut both concrete blocks and bricks. Petrol-driven versions are available, and these are capable of cutting practically anything. Regulations do not permit persons below the age of eighteen to use these machines and all users should wear steel toe-capped boots, goggles and ear defenders.
Fig. 151 Petrol-driven STIHL saw.