Blowing
The rushing, roaring noise created by the forcible ejection of gases at the runners and risers when the vents are insufficient to carry them away, or are accidentally choked, is by the moulders termed "blowing." See VENTING.
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The rushing, roaring noise created by the forcible ejection of gases at the runners and risers when the vents are insufficient to carry them away, or are accidentally choked, is by the moulders termed "blowing." See VENTING.