The cryogenic grinding technique does have fundamental advantages compared to grinding at ambient temperatures (~at or above ordinary room temperature). The yield of the cryogenic technique is much higher and the results are a finer powder. The physical structure of ambient ground rubber results in a shattered and rough surface, whereas cryogenic ground rubber powder does have an almost cubic geometry with an intact smoother surface. During the cryogenic grinding process there’s no chemical degradation of the rubber. On the contrary the ambient grinding process does develop high temperatures which results in local degradation of the rubber.