Neto
Well-known member
Here is an interesting PDF article about different blasting materials & their uses.
http://www.universalminerals.com/library/article_softmediablasting.pdf
http://www.universalminerals.com/library/article_softmediablasting.pdf
http://www.universalminerals.com/library/article_softmediablasting.pdf
http://www.universalminerals.com/library/article_softmediablasting.pdf