Eyewitnesses have told ITV News Central a number of loud explosions could be heard from the fire at G&P batteries in Darlaston, Walsall.
50 firefighters are currently tackling the blaze on Willenhall Road.
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Cloudy and wet today.
Mostly dry start, outbreaks of rain developing from west.
An innovative recycling plant in Rugby is trying to help solve the world's plastic problem by making an alternative to fossil fuel