Paramedics have been treating a woman attacked by a dog on the the same estate where police had previously seized an animal just over 12 hours ago.
Today in a separate incident another woman has been attacked but by a different dog.
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The retailer has made its first job cuts since falling into administration last week.
A public inquiry is to be held into proposals by the oil and chemical firm INEOS to explore shale gas reserves near Chesterfield.
Members of the RMT on Arriva Rail North (Northern) walked out for 24 hours, with more stoppages due on Thursday and Saturday.