sentences:  Designs were solicited from a number of sources, and the feasibility of the plans received was checked by a panel of consultants brought in from the Anglo-Iranian Oil Company.Military engineers then constructed prototypes of the most promising designs and, after testing, demonstrated their capabilities in front of a number of different admirals and generals.The most effective was a design submitted by the Lagonda car company, which fired eight gallons of a diesel oil/tar fuel mixture per second, igniting to produce a continuous gout of flame with a range of nearly , which at its widest point was roughly in diameter.