Addendum: An interface to provide the physical properties of blast waves generated by propane explosions

The paper by J.M. Dewey (Shock Waves 29(4):583–587, 2019 ) described the development of an Excel-based interface that provides the physical properties of blast waves generated by propane/oxygen explosions. The interface was developed using the data from a nominal 20 ton explosion of an assumed stoichiometric propane/oxygen mixture. Comparisons of data from the interface with measurements of small-scale stoichiometric propane/oxygen explosions show discrepancies. Further studies revealed that the 20 ton explosion was not stoichiometric and had a 43% oxygen deficiency. The interface has been redeveloped assuming that only 57% of the available propane had been detonated. The revised interface produces results which agree with measurements from both the 20 ton explosion and the small-scale (