The blaze that took hold of a commercial site in Wing last Monday left firefighters trapped by a fallen overhead power line that had blocked the entrance.
More than 40 firefighters battled against the flames and evacuated 15 people from businesses in the area as the risk of explosion remained for the next 48 hours.
Leighton Buzzard fire crews were first to arrive at the scene.
Crew commander John Field said: “As soon as we arrived we knew there could be a problem with it being a farm in the middle of nowhere where crews will take longer to get to and the lack of water.
“Then the acetylene cylinders began exploding and that’s when we knew we had to get everyone out and at least 200 metres away.
“Our main priority is making sure everyone is safe and nowhere near there, but then we saw the power cables fall and we retreated.
“The exit was blocked; the line was in front of where we needed to get out of the site.”
One man was treated for smoke inhalation after the fire broke out at the single-storey industrial unit at around 3.30pm.
Bucks fire crews confirmed their appliances would not be removed from the scene of Cublington Road until there was confirmation that the acetylene cylinders are no longer a threat.
A 150-metre cordon was put in place around the scene while firefighters used ground monitors and fixed jets to bring the fire under control, but crews confirmed the site was destroyed by the flames.
The cause of the blaze is being investigated.
> Reader Flip Jackson’s photo of the blaze taken from Stewkley