The blaze, which was so enormous it could be seen from Sheffield, led to more than 100 local people being evacuated from their homes.
At its height, 160 firefighters from across Nottinghamshire and Derbyshire were called in to fight the fire – described at the time by a senior officer as one of the worst he had ever seen.
The noise of exploding containers was heard for several miles and local residents were warned to stay in their homes in case the fumes were toxic.
Luckily, nobody was injured in the fire, which took firefighters several hours to extinguish.
Here’s a selection of pictures from the blaze, as provided by Mansfield Fire Museum.
For more information about the museum and how to visit, see mansfieldfiremuseum.org.uk
Mansfield Fire Museum has one of the largest collections of fire service memorabilia in the country.
The museum is located in the former Nottinghamshire Fire Brigade Training School which is at the rear of Mansfield Fire Station on Rosemary Street.
1. Heroes
Paul Horton, of Mansfield Museum, has shared these heroic photos from the day. The fire broke out on May 6, 1991. Photo: Paul Horton / Nottinghamshire Fire and Rescue Service / Mansfield Fire Museum
2. Evacuations
More than 100 people had to evacuate their homes. Photo: Paul Horton / Nottinghamshire Fire and Rescue Service / Mansfield Fire Museum
3. Notts/Derby
Crews from across Nottinghamshire and Derbyshire were at the scene. Photo: Paul Horton / Nottinghamshire Fire and Rescue Service / Mansfield Fire Museum
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The fire was one of the biggest Nottinghamshire emergency service incidents in history, with 28 appliances in attendance. Photo: Paul Horton / Nottinghamshire Fire and Rescue Service / Mansfield Fire Museum