31. When the coal and checker work are hot enough, the air blast is shut off and the steam blast is turned on. 32. Single-hose technology was developed by Cold Jet, LLC in 1986, and uses a single hose to deliver air blasts and dry ice. 33. The outer shells are equipped with nozzles for pipe and instrument connections, access doors, air blast doors, gas outlets, and sight holes. 34. Certain grades of steel are sensitive to the 78 % nitrogen which was part of the air blast passing through the steel. 35. In that case the underlying principle was that heating the air blast before introducing it into a blast furnace made for better iron. 36. We have three rigs coming : an RC ( reverse circulation ), an RAB ( rotary air blast ) and a core rig. 37. The system did not have a power conversion but used a secondary heat air blast system to dissipate the heat to the atmosphere. 38. The GBU-43 / B Massive Ordnance Air Blast bomb live prototype is shown an instant before impact on Range 70, 11 March 2003. 39. Fuis said he also was encouraged by how far inland-- in some cases 64 miles-- the underwater air blasts were picked up by seismographs. 40. Throughout his life he experienced respiratory trouble from the air blast in the tunnel, and felt he had been cheated of his proper payment.
