A lot by the look of things - see how many safety blunders you can spot
Thanks to Ivan Dickason for sending in this snap of two workers removing bricks.
He takes us through the health and safety blunder checklist: "The bricks are being removed by use of a large angle grinder—hence the cloud of dust. Note the ‘scaffolding’—a pile of bricks! Hard hats–No! Ear defenders—No! Eye protectors—No! Face mask—No! Gloves—No! Protective footwear? Not really."