A GAS bottle explosion ``like an earthquake'' at a Margate petrol station sent seven people to hospital earlier today.
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Witnesses reported people ``sent flying'', windows blown out and pictures falling from walls of nearby businesses, with one reporting a ``mushroom cloud'' from the blast.
A male from a nearby business used a fire extinguisher to extinguish a residual flame.
A Royal Hobart Hospital spokeswoman confirmed injuries were not life-threatening, with patients reporting ``being dazed'' and possibly concussed from the blast.
They have since been released from hospital.
Allen Sculthorpe, owner of nearby Margate Hardware said while nearby homes and cars had windows blown out, another man who was filling up his car remained standing.
The explosion occurred just before 10am this morning.
Investigations into the cause will continue into the evening.