The crane worker, who is in his 30s, suffered a cardiac arrest after the massive electric shock. Ambulance crews used a defibrillator on him and he was partially resuscitated at the scene. He was breathing but unconscious when he was airlifted away.
He is now in a critical condition in the Royal United Hospital in Bath. The man is not from Wiltshire.
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West Country neighbours meet for first time this season at Kingsholm in Premiership.
The funeral of a mother and newborn baby found dead after going missing from a maternity hospital took place today.