Firefighters are tackling 50,000 tonnes of waste near Stratford-Upon-Avon.
Fire services were called to Sims Metal Management in Long Marston just after nine o'clock last night.
Fire services from neighbouring counties have been called in to help.
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A man has been jailed for 16 years for repeatedly stabbing his partner before turning on her 13-year old son, who came to his mother's aid.
Staffordshire County Council discovered the rare minute-by-minute witness account.
At it's height 23 firefighters were called out to tackle the fire.