Patent ID: 9290418
Filing Date: 2016-03-22
CPC Classification: C06B

Claim Text:
1. An explosive composition comprising: a heavy ANFO comprising ammonium nitrate prills, fuel oil, and a water-in-oil emulsion explosive; and expanded polymeric beads; wherein the ammonium nitrate prills have one of : (a) a predominant prill mesh size and (b) an average prill mesh size; wherein the water-in-oil emulsion explosive has a density greater than 1.37 g/cc; wherein the expanded polymer beads have a density in the range of 0.010-0.016 g/cc and a bead size that is at least 70% and no more than about 200% of: (a) a size in the range of the predominant prill mesh size and (b) the average prill mesh size.