ORIGINAL: kdc
Several years ago the British Model Flying Association strongly advised members not to use sealed or unventilated flight boxes containing glow fuel. This was after an horrific accident resulting in facial burns to a modeller. Apparently vapour from glow fuel was in the sealed box, when opened a spark, perhaps from the battery, ignited right in his face.
So beware if you use plastic toolboxes keep the fuel outside!
SOUNDs like, the ignition source ,may have been a, static electricity spark, from either, rolling the chest over dry grass,perhaps as simple as sliding ,or lifting, a drawer, or a lid, too..Good ventilation ,and a grounding Wire, with rod, pushed into the ground may have prevented that accident.