Tank 97 on this web site was of a welded building measuring 27 ft in diameter and 35 ft excessive. It held 125,000 gallons. Two manhole covers, one on the roof and one at floor stage, have been held shut with metal plates secured by nuts and bolts. This tank had been empty for two years however had previously held Myrcene (a member of the turpentine household). This chemical would depart a thick, gummy deposit on the inside of the tank. This sediment could possibly be easily ignited or when heated would give off a flammable vapour which, if combined with air, is doubtlessly explosive.
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