A ROCK-BLASTER is seeking more than $3 million compensation for an accident that left him with chronic pain and ruined his sex life, a High Court writ said. Tsang Kam fractured his spine when he plunged eight metres at a Tai Po construction site three years ago. He claims chronic back pain has left him short tempered and unable to enjoy his old hobby of walking. He suffers from dizziness and vomiting and cannot walk, sit or stand comfortably for more than 20 minutes at a time, according to the writ. Mr Tsang, 50, also claims to have developed sexual difficulties after the accident and says the pain of bending down makes it hard for him to do up his shoelaces. He wears a corset every day to support his injured back, the writ said. The blaster is suing his former employers at the Shing Kee Construction Works and Wan Hin and Company Limited for $3,193,300. On January 24, 1995, Mr Tsang went to work on a building site as a rock-blaster. When his employers instructed him to climb down a metal chain, rather than a ladder, he slipped and fell eight metres, the writ said. He had not been wearing a safety harness.