31. Foreign security contractors stood guard around the hotel's concrete blast walls while private Iraqi guards directed traffic and pedestrians away. 32. The blast walls around a revetment are designed to channel blast and damage upwards and outwards away from neighbouring aircraft. 33. The program's computational models agreed with experimental results and were used to guide the process of designing new blast walls . 34. Some of the troops sat in the sun inside the sent ` agged Civil Defense headquarters, inside high concrete blast walls . 35. D / FW officials later began a $ 3.3 million study to reconstruct the terminal faces, possibly with thick blast walls . 36. External blast walls , fire walls and blast rated HVAC ductwork system were designed and fabricated by MTE ( Mech-Tool Engineering Limited) 37. The Baghdad bomb exploded outside a meter-high ( three-foot-high ) concrete blast wall which protects a U . S . checkpoint. 38. Blast walls and dirt-filled baskets were erected at that gate and other checkpoints in the Iraqi capital following the January blast.39. Soldiers secured the journalists'hands behind their backs with plastic cuffs and held them beside a concrete blast wall on the hotel perimeter. 40. The Baghdad bomb exploded outside of a meter-high ( three-foot-high ) concrete blast wall which protects a U . S . checkpoint.
