Residents were evacuated from their homes following fears of an explosion after a car repair garage went up in flames.
Emergency services sealed off streets after it emerged there were a number of gas cylinders in the garage on Stone Lane, New Whittington, near Chesterfield.
The blaze was discovered on Tuesday, just before noon, and involved a garage and adjoining business.
Crews from Dronfield, Bolsover, Lowedges, Clay Cross and Mansfield Road in Sheffield were involved in the firefighting operation;
A Derbyshire Police spokeswoman said the blaze is not being treated as suspicious.