Derbyshire workers during the last century are pictured in this collection of retro photographs.
These photos provide an insight of how the workforce and workplace has changed over the last century.
Pictured are miners, farmers and workers in the growing engineering industry which provided a lot of jobs because of the machinery.
17. Old bus
An old London bus being drawn by horses on its way to St Pancras Goods Station, London on May 26, 1937, where its roof was removed to enable it to fit on a railway trolley and taken to Chesterfield for breaking up. (Photo by H. Allen/Topical Press Agency/Getty Images) Photo: H. Allen
18. Controlled explosion
A controlled explosion at a mining safety research station at Harpur Hill, Derbyshire, where a handful of men were fighting continually against the causes of coal mine disasters. Coal dust, under certain conditions is as dangerous as high explosive and these men were experimenting every day to find an effective method of combating the menace. A four foot wide tube to represent a mine shaft was filled with coal dust and purposely exploded, then the burnt out dust known as firedamp, a very poisonous gas, was analysed. More deaths were caused by the gas than the actual explosion. (Photo by Fox Photos/Hulton Archive/Getty Images) Photo: Hulton Archive
19. Police telephone operator
A Chesterfield Borough Police telephone operator is pictured testing a gasmask with built in earpiece and microphone. The telephone service was considered one of the most important links in the coordination of ARP operations and remained operational during air raids. Picture taken in April 12, 1939. (Photo by Fox Photos/Hulton Archive/Getty Images) Photo: Fox Photos
20. Factory focus
Canteen staff serving workers at Trebor Bassett. Do you recognise anyone on the photo or know what year the photo was taken? Photo: Submitted