21. Inert gas is used because oxygen and oil can form an explosive mixture when combined under high pressure. 22. That bomb and the second one found Wednesday were made from an explosive mixture of nitrates and diesel fuel. 23. From early 1978 ammonium nitrate came into fashion as an ingredient of explosives mixtures that could be prepared on-site. 24. But along came an explosive mixture : Cuba, the shooting down of two civilian planes, and an election year. 25. The programs must assume that the tanks always contain an explosive mixture during all maintenance, ground and in-flight operation. 26. RDX was widely used during World War II, often in explosive mixtures with Dambusters Raid " each contained of Torpex. 27. Hydrogen gas was vented into the reactor maintenance halls and the resulting explosive mixture of hydrogen with air oxygen detonated. 28. Because TNT has an excess of carbon, explosive mixtures with oxygen-rich compounds can yield more energy per kilogram than TNT alone. 29. This is an explosive mixture of left-and right-wing themes : in European terms poujadiste, or proto-fascist; in American terms, Prairie Populist. 30. In 1981, a dust explosion occurred at the Banbury factory when corn starch powder mixed with air, forming an explosive mixture .
