A Shropshire-based building firm has been awarded a £20m contract to prevent pollution from escaping from railway maintenance depots.
Wrekin Construction in Shifnal will work on the project at 21 depots across northern England and Wales.
The deal lasts for the next three-and-a-half years.
Wrekin Construction, which is named after Shropshire's famous natural feature, employs more than 750 people across England and Wales.
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