21. The air pressure fuze is designed to be resistant to shock and overpressure mine clearance techniques. 22. The 9?9mm NATO and 12.7?9mm NATO rounds can be regarded as overpressure ammunition" 23. Series 1 delivered 57 locomotives in four batches which had a boiler overpressure of 8 bar. 24. On the second series of five batches, the boiler overpressure was raised to 10 bar. 25. It's hardly less dangerous though since the'overpressure 'would be the same. 26. The combination of low metal content and resistance to overpressure make the mine extremely difficult to remove. 27. The mine uses a metal grid instead a pressure plate, this gives it resistance to overpressure . 28. The Chemical Biological wing developed an armored and mine protected field laboratory with CW filtered overpressure systems. 29. The large overpressure caused " catastrophic tube failure " ( an explosion destroying the gun tube ). 30. In general, the greater an aircraft's altitude, the lower the overpressure on the ground.
