|Thermally activated ice warning signs
|Icy conditions are a hazard for workers at any quarry. In 2005, there were injuries ranging from bruising to fractured wrists as a result of slipping on ice. In response, thermally activated signs have been placed at strategic points around the site to warn of icy conditions. They have Thermo – Chromic ink spelling out “WARNING” and are designed to show 1 per cent of the ink at plus 12 degrees and 100 per cent at zero degrees. At only £15 each, they are a cost-effective option. The fact that the signs change means that workers are more likely to take notice than static signs which are present all year round.