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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Leicester is then worst place to raise a family in England and the second worst in the UK, according to a new report.
Rain in the morning, then mostly dry with sunny spells.
Dry overnight, then outbreaks of rain tomorrow, sunny spells later.