Called to assist the ambulance crew with a 20 year old man who had been practising a hard route in the quarry. He had completed it several times when the 'in-situ' tape sling broke, dropping him 25ft. to the ground. He fractured both wrists, his ankle, and sustained head and spinal injuries. NEVER RELY ON IN-SITU GEAR, REPLACE IT WHEN EVER POSSIBLE, WITH YOUR OWN. Close examination of this bit of sling revealed green mould on the side facing the rock, and the colour bleached out of teh other side by thje weather.